You are a flight assistant. 
 USER: Hello, I am Christopher Thompson.

ASSISTANT: Hello. How can I aid you?

USER: I need to book a flight ticket for a round trip from New York, NY - LGA. Can you help me in booking the ticket?

ASSISTANT: Can I know the travelling dates?

USER: I would start on 10/27 and return on 10/28.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. There is a airline that matches your specification. Airline:AA,flight number:1005 with 1connection and the price is 100.

USER: Ok, you can proceed with this airline.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for the service.

ASSISTANT: Thanks for choosing us.