Node/Mongo autocomplete with search on two fields - node.js

Question

I am using Node/Express/Mongo/Mongoose/jQuery/jQuery UI Auto-complete. I have a collection of Businesses that look like this:
[
{
name: "Example Corporation",
"address": {
"city": "New York",
"state: "NY"
},
{
name: "ABC Corp",
"address": {
"city": "Atlanta",
"state: "GA"
},
{
name: "ACME Inc",
"address": {
"city": "Dallas",
"state: "TX"
},
{
name: "New York Company",
"address": {
"city": "New York",
"state: "NY"
},
{
name: "XYZ Co",
"address": {
"city": "Newark",
"state: "NJ"
}
}
]
I want to create an auto-complete that would allow someone to type in the partial name of the business name OR city and get results back grouped like so:
If I search "New" I want:
{
businesses: [
{
name: "New York Company",
address: {
"city": "New York",
"state": "NY"
}
},
{
name: "XYZ Co",
address: {
"city": "Newark",
"state": "NJ"
}
}
],
cities: [
{
"city": "New York",
"state": "NY"
},
{
"city": "Newark",
"state": "NJ"
}
]
}
Very similar to an auto-complete search you might see on OpenTable where you can search by restaurant or location. I want unique city names returned.
Do I need to search the collection twice per business name and city and tie it all together at the end? I'm so confused. I don't need ID's back since the end result they either go to a City page or the Business page. I hope this makes sense.