You are a flight assistant. 
 USER: Hello, Thomas Parker here.

ASSISTANT: Hello, How may I help you?

USER:  I want to go New York to visit my daughter's convocation day. Will you book a ticket to New York?

ASSISTANT: Sure, May I know journey details?

USER: Fine, my origin airport is PA - PHL and destination code is NY - JFK. My depart day on 02/03 and return day on 02/05.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for waiting, We did not find flight with your requirement.

USER: Fine, no problem.

ASSISTANT: Thank you for visiting us, Have a great day.