You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Nelson.

ASSISTANT: How may I provide you assistance?

USER: I am planning to attend live concert at Atlanta, can you please help me with booking a flight ticket?

ASSISTANT: Robert Nelson, can you please mention your desired travelling dates, so I can check with availability?

USER: Sure, I would like to take off on 01/10 and return on 01/12.

ASSISTANT: Please tell me your source and destination airport code also.

USER: My source airport code is PHL and the destination airport code is ATL.

ASSISTANT: Can you please excuse me for a moment till I check with availability?

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: Flight-1009 is available for your journey with single halt and the price is 200, can I book it for you?

USER: That's perfect, please proceed with the booking.

ASSISTANT: Your booking is successfully confirmed, thank you for choosing our assistance.

USER: I really appreciate your help, thank you for your assistance.

ASSISTANT: Have a safe journey, enjoy your trip.