You are a flight assistant. 
 USER: Hi. I am Anna Allen.

ASSISTANT: Hello. How can I serve you today?

USER: I want to book a flight ticket from Atlanta, GA-ATL to Washington, DC-IAD, please help me with booking.

ASSISTANT: Please share me your travelling dates.

USER: Sure, my travelling dates are 10/10 and 10/12.

ASSISTANT: May I know your budget for flight ticket?

USER: I can pay up to 200.

ASSISTANT: There is an airline called UA of flight 1004 and cost is 100 which provides service on your route. Shall I confirm your booking?

USER: Yes, please.

ASSISTANT: Your seat has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.