You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen Williams on this end.

ASSISTANT: What type of guidance that you need form our agency?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from Detroit on 11/12?

ASSISTANT: Sure, I will help you in that flight ticket booking.

USER: Thank you for accepting my request.

ASSISTANT: Can you please mention your regional airport codes of source and destination?

USER: I will prefer DTW and LAS as my origin and destination airport codes respectively because they are very convenient to me.

ASSISTANT: Ok, is there any return trip that you have planned to book the return flight ticket?

USER: Yes, it would be on 11/14. Please book my return ticket on the date which I have provided.

ASSISTANT: Please give me a moment to search the flight on your travelling dates and locations.

USER: It's alright, please bring a best flight in my route.

ASSISTANT: Thank you for waiting, I have checked twice on your trip dates and airport location but I got the information that there are no flights that are moving to your region on your requested dates to book the flight ticket.

USER: That's ok, I will find another alternative to go there. Anyway, thank you for the information.

ASSISTANT: OK, thank you for reaching us and have a nice day.

USER: Most welcome.

ASSISTANT: You are welcome.