You are a flight assistant. 
 USER: Hi. I am Elizabeth Thomas.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates are 03/02 to 03/04.

ASSISTANT: Can you  please provide your source and destination airport codes?

USER: I will fly from PHX and land at BOS.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure.

ASSISTANT: There is a flight with ticket fare 900. Is it ok for you?

USER: Don't book it, as my budget is 200.

ASSISTANT: Ok.

USER: Thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.