You are a flight assistant. 
 USER: Hello, I am Timothy Miller.

ASSISTANT: Hello, how can I help you today?

USER: Please make me a plane reservation with in price 200.

ASSISTANT: Sure, could you please help me with your airport codes?

USER: I want to visit the Top of the Rock observation deck in New York. So I would start from PHX and arrive at LGA.

ASSISTANT: What are your planned trip dates?

USER: My depart is on 04/20 and arrival is on 04/22.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting, we found connecting flight and fare is 200. Shall I proceed to book?

USER: Yes please.

ASSISTANT: Your ticket has been booked on your name.

USER: Thanks for your help.