You are a flight assistant. 
 USER: Hello, I am Patricia Campbell.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I would like to visit Liberty Bell in Philadelphia, so could you please book a ticket for me?

ASSISTANT: It's very nice place. Can you provide the airport abbreviations which is nearer to you?

USER: My airport codes are JFK and PHL.

ASSISTANT: Please share the dates when you are willing to travel.

USER: My source and destination airport codes are JFK and PHL.

ASSISTANT: Please stay online for a moment.

USER: I would like to go on 04/19 and return back on 04/21.

ASSISTANT: Noted. Thank you for waiting, there is a flight available with Frontier airline. Would you like to travel in this flight?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been confirmed with the flight number 1013. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.