You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Brain Evans. I need to book a flight  ticket from PHL to LAX, Can you please help me for booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on 02/12 to 02/14.

ASSISTANT: How much you can afford for this ticket?

USER: I can pay up to 500.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1001. Shall I book this ticket?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you.