You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, it is. How may I help you today?

USER: I would like to travel Denver city for enjoying my winter holidays, can you please check is there any flight available from Denver on 04/25?

ASSISTANT: Sure, help me with your airport codes of travelling.

USER: I would like to take off from DEN airport because it is near to my location and my destination airport is DEN.

ASSISTANT: May I know on which date you would like to return?

USER: Yes, please book my return ticket also on 04/27.

ASSISTANT: Wait a moment please, let me check the flights availability for your round trip.

USER: Sure.

ASSISTANT: I have found a flight based on your provided details, Flight-1016 of UA airlines available for your round trip. Do you have any other concerns?

USER: Please book this flight ticket on my name.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Mary Rodriguez.

ASSISTANT: Thanks for providing the details. Mary Rodriguez, your ticket has been booked successfully.

USER: Thank you for you help in booking flight ticket.

ASSISTANT: Thank you for choosing our service and keep connecting with us in future too.

USER: Welcome.