You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: I am Mark Wright. I am planning to visit Detroit, can you please help me to book my flight ticket from IAD to DTW?

ASSISTANT: Ok, when did you scheduled to travel & return?

USER: I want to depart on July 25th and I will return back on July 27th.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you need any whistle stop in between your journey?

USER: I prefer for a single connection.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: We have found a connected flight with Delta airlines, flight number 1006 and the fare of 200. Would you like me to proceed next?

USER: Yes, you can proceed for booking the ticket.

ASSISTANT: Sure, a seat has been reserved successfully for a flight 1006.

USER: Thank you so much for helping me.

ASSISTANT: Most welcome.