You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephen Carter here.

ASSISTANT: Carter, how can I aid you?

USER: Can you please help me in booking the ticket from CLT to DCA? As I'm planning to visit Disney world at Washington.

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, my planned departure and return travel dates are 04/15 and 04/17.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with AA airline and it costs you 100. Shall I proceed?

USER: That's perfect! You can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked with 1011 flight number.

USER: Thank you so much for your help in booking the ticket.

ASSISTANT: Welcome.