You are a flight assistant. 
 USER: Hello, myself Christopher Martin.

ASSISTANT: Hello, how may I lend a hand to?

USER: I would like to meet my brother at New York, can you please help me to book my flight ticket from PHL to JFK?

ASSISTANT: Sure Martin, I am willing to help you for this. When you are willing to travel?

USER: Sure, I will depart on 08/11 and return back on 08/13.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: As per your data, there is a flight with AA airlines and the ticket figure is 300. Shall I proceed for this?

USER: No, I can only afford 200.

ASSISTANT: Ok, I will check the status.

USER: Sure.

ASSISTANT: Martin sorry to intimate, no flights are found with your criteria.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you Martin for utilizing our agency.