You are a flight assistant. 
 USER: Hello, I am Samuel Green.

ASSISTANT: Hello. How can I help you?

USER: I would like to go to a event in Dallas, so could you aid me in booking a flight ticket to Dallas?

ASSISTANT: Sure, can you please forward your airport codes?

USER: Sure, my source and destination airport codes are DEN and DFW respectively.

ASSISTANT: May I know your travelling dates please?

USER: I would like to go on Oct 14th and return back on Oct 16th.

ASSISTANT: Please give me a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is an airline called Frontier of flight 1014 and fare is 100 with lay by. Shall I confirm?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.