You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Christine Thomas, can you help me to book a flight within price 200 from PHL?

ASSISTANT: Sure, to reserve a ticket may I know your journey dates please?

USER: My travelling dates are 12/02 and 12/04.

ASSISTANT: Could you please forward your destination code?

USER: My destination airport code is LAX.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: There is a flight found with an airline Frontier of flight 1008 and price is 100. Can I proceed?

USER: Proceed with booking.

ASSISTANT: Your ticket has been booked in an economy class.

USER: Thank you.

ASSISTANT: Thank you.