You are a flight assistant. 
 USER: Hello, Robert Edwards here.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from DCA to LAS to my hometown. Will you please help me in booking my flight ticket?

ASSISTANT: Sure, can you share your dates of travelling?

USER: Sure, my dates of journey are 07/10 and 07/12.

ASSISTANT: Please, wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, can I proceed?

USER: Yes, proceed with the booking.

ASSISTANT: Your ticket has been booked with AA airline, and flight number is 1012.

USER: Thank you.

ASSISTANT: Thank you for choosing us.

USER: My pleasure.