You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Betty Phillips here.

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

USER: Actually, I am looking for a direct flight to my journey, can you please help me out with booking of a flight ticket from Detroit to New York?

ASSISTANT: Ok Betty Phillips, I can help you with the ticket booking.

USER: Thank you.

ASSISTANT: Which airports are nearest to your locations?

USER: Sure, I want to travel from DTW to LGA.

ASSISTANT: Ok, can you please share your trip dates?

USER: Sure, I am planning to leave on 04/29 and please book my return ticket on 05/01.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, I have not found any direct flights in this route on the dates you have given.

USER: Oh! So sad to hear that. Anyway, thank you for the information.

ASSISTANT: You are most welcome. Thank you for reaching us.