You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Frank Lopez here. I would like to travel in a direct flight to New York for an emergency purpose, can you please help me in booking a ticket?

ASSISTANT: Sure Frank. Please provide me your dates of travel.

USER: The travel dates are from 06/14 to 06/16.

ASSISTANT: Which airport do you prefer in New York, LGA or JFK?

USER: Source airport code is DTW and destination airport code is LGA.

ASSISTANT: Please wait a minute while I check the availability of flights.

USER: Ok.

ASSISTANT: Frank, there are no flights available with your preference 0 connections. Shall I check for 1 connection instead?

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Most welcome.