You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Linda Clark.

ASSISTANT: How can I serve you today?

USER: I want to book a flight ticket from PHL to DEN. Please help me in booking a flight ticket.

ASSISTANT: Kindly mention your planned travel dates?

USER: My trip dates are from 12/12 to 12/14.

ASSISTANT: Let me know your budget for flight ticket.

USER: I can afford up to 200.

ASSISTANT: There is a flight available with an airline AA of flight 1008 and price is 100. Would you like me to proceed?

USER: Please proceed for booking.

ASSISTANT: Your seat has been reserved in an economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.