You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Angela Robinson here. I want to travel from DCA to DEN for a business trip, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you, I am planning to leave on 12/07 and please book my return ticket on 12/09.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: That's fine for me, you can proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1007.

USER: Thank you for your assistance in booking of my ticket.

ASSISTANT: Thank you for choosing us.