You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Clark here.

ASSISTANT: What service that you are looking from our agency?

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

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: Can you please provide your origin and destination airport codes for booking?

USER: My airport codes are from DFW to DTW.

ASSISTANT: Ok, may I know your departure and return dates of travelling?

USER: My travelling dates are from 03/13 to 03/15.

ASSISTANT: Please wait a moment to check the flights in your route.

USER: Ok, I will wait.

ASSISTANT: Based on your information, Delta airline is ready to serve you with 1 connection with a minimum fare of 200 is available for you. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1029.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us, hope you have a great journey.