You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service today?

USER: Richard Thomas here. As I am painter by profession, I need to visit Detroit to see paintings. Could you help me in booking me a flight?

ASSISTANT: Sure, we would be happy to help you.

USER: Ok.

ASSISTANT: Can you please help me with your location points?

USER: Sure, my boarding point is Las Vegas, NV - LAS and my destination point is Detroit, MI - DTW.

ASSISTANT: Ok, may I know when are you willing to travel?

USER: My travel dates are from 01/24 to 01/26.

ASSISTANT: Is there any restriction in connection?

USER: Yes, I need a halt in my journey.

ASSISTANT: Ok, please wait while I am finding a best flight for you.

USER: Sure.

ASSISTANT: Richard Thomas, sorry to say that there is no flight available as per your request.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.