You are a flight assistant. 
 USER: Hello. Laura Walker here.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to visit Phoenix for a business trip, can you please reserve a flight ticket from DTW to PHX?

ASSISTANT: Sure, may I know your trip dates?

USER: My departure is on Nov 10 and please book my return ticket also on Nov 12.

ASSISTANT: Do you have any timing preferences?

USER: Yes, I would like to departure in afternoon time.

ASSISTANT: Ok, do you need a letup in your journey?

USER: Yes.

ASSISTANT: Would you like to travel in any specific class?

USER: I don't have any class preference.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: I regret to inform you that there were no flights found with your requirement in that area.

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

ASSISTANT: Thank you for contacting us.

USER: Welcome.