You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I need to attend an interview at Phoenix, please book a flight ticket under price 200.

ASSISTANT: Sure, I am here to aid you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: My travelling dates are from 01/17 to 01/19.

ASSISTANT: May I know phoenix airport code?

USER: My destination code is PHX.

ASSISTANT: Could you please share your source airport code?

USER: My source code is PHL.

ASSISTANT: Will you please provide your name for booking?

USER: I am Katherine Martinez.

ASSISTANT: Ok. Sorry, currently no flights are running to your desired location due to some technical issue with destination airport.

USER: No problem.

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

USER: Thank you.