You are a flight assistant. 
 USER: Hello,. I am David Baker.

ASSISTANT: Hello, how can I aid you today?

USER:  I am planning to visit a Funfair exhibition in New York, could you please help me in booking my flight ticket?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: I need to leave from my nearest airport PHX to reach JFK.

ASSISTANT: Could you please share your travel dates?

USER: I want to travel on 06/23, and need to catch return flight on 06/25.

ASSISTANT: We found a UA airline, flight number: 1013, price: 200 with one connection.

USER: Proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for the assistance.

ASSISTANT: Thank you for choosing us.