You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brian Phillips here.

ASSISTANT: What service that you need from our travel agency?

USER: I want to attend a Marriage in Denver. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you in ticket booking. Can you please tell me your travel dates?

USER: My travelling dates are from 11/15 to 11/17.

ASSISTANT: Ok, please mention your source and destination airport codes.

USER: My airport codes are from DTW to DEN.

ASSISTANT: Ok, please hold on for a minute.

USER: Ok, I will wait.

ASSISTANT: The Delta airlines is found in this route which is providing the service with connection limit 1 and the ticket fare is 100. Can I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, I have reserved your  ticket with the flight number 1009.

USER: Thanks for helping me.

ASSISTANT: You are most welcome. Hope you enjoy the trip. Thank you for choosing us.