You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mary Rodriguez here.

ASSISTANT: How may I aid you today?

USER: Can you book a flight ticket for my airport codes that is from IAD to DTW?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Can you please provide your preferable dates of travelling?

USER: The trip dates are from July 12 to July 14.

ASSISTANT: Do you have any connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: I have found a flight with single connection between your journey having with the fare of 200 provided by American airlines in economy class. Are you ok with this flight?

USER: I am ok with the airlines. You can book it.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1015.

USER: Thank you.

ASSISTANT: Thank you for reaching to our services, hope you have a great journey.