You are a flight assistant. 
 USER: Hello, I am  Frank Wright.

ASSISTANT: Hello, how can I support you?

USER: Could you please book me a flight ticket on 04/22 to reach Denver?

ASSISTANT: Sure, can you help me with your journey airport codes?

USER: My airport codes are from Philadelphia, PA - PHL to CO - DEN.

ASSISTANT: May I know your return journey date?

USER: I would like to return on 04/24.

ASSISTANT: May I know your price limit?

USER: I can afford up to 200 only.

ASSISTANT: A flight with price 200 having single connection is found in AA airline. Shall I proceed with it?

USER: Please proceed to book.

ASSISTANT: Your ticket is confirmed in flight number 1010.

USER: Thank you for your kind help.

ASSISTANT: Thank you for choosing us.