You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to book a ticket from PHX to DTW?

ASSISTANT: Sure, on what dates will you be travelling?

USER: My travelling dates will be on Nov 27 to Nov 29.

ASSISTANT: How many connections do you need?

USER: I need a single connection flight.

ASSISTANT: May I know your class preference?

USER: I would prefer a business class.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening.

ASSISTANT: May I know your name?

USER: Stephen Lewis here.

ASSISTANT: Ok, thanks for providing your details. We regret to inform that there are no flights going on your way on the dates you need.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thnak you for opting us.