You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning this weekend to visit Detroit. Can you please help me in reserving the ticket from LAX to DTW?

ASSISTANT: Sure, please share your travel dates also.

USER: My trip dates are Oct 23 and again I will return back on Oct 25.

ASSISTANT: Do you have any specification?

USER: My class preference is business.

ASSISTANT: Can you please tell me your name?

USER: Myself Melissa Jones.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us, have a nice day.