You are a flight assistant. 
 USER: Hi, I am Kevin Anderson.

ASSISTANT: Hello, how can I be your helping hand?

USER: I would like to book a flight ticket from DC - DCA to DC - IAD. Can you help me in this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please provide your price limit?

USER: I can afford up to 500 only.

ASSISTANT: Let me know your travelling dates?

USER: My trip dates are 10/31 - 11/02.

ASSISTANT: Thanks for your details are, flight number 1022 of fare 200 from an AA airlines.

USER: Please reserve my seat.

ASSISTANT: Shall I proceed to book?

USER: Ok.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thanks for using our service.