You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Larry Williams, I need to have flight ticket booking in the month of October for a round trip in Denver. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you. Can you please provide me your travel dates?

USER: Thank you for noting my request, my travel dates are 10/12 and 10/14.

ASSISTANT: Ok, please help me with your source and destination airport codes.

USER: Yes, my source and destination airport codes are the same as I need to have a round trip that is DEN.

ASSISTANT: There is a flight available with UA airlines and the ticket fare is 100 only. Shall I book the ticket?

USER: Yes, please go ahead with my booking.

ASSISTANT: Larry, your ticket is booked with the flight-1015.

USER: Thank you for booking my flight ticket with flight 1015.

ASSISTANT: You are most welcome.