You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please make a reservation with the name of Elizabeth Young to PHX.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your itinerary dates?

USER: I want to travel on 20 Mar and return back on 22 Mar.

ASSISTANT: Do you need any whistle stop in your journey?

USER: Yes, I need a whistle stop in between my journey.

ASSISTANT: May I know your depart and arrival time?

USER: I want to depart in the evening.

ASSISTANT: From where you want to start your journey?

USER: I want to start my journey from DTW.

ASSISTANT: Do you have any other preferences?

USER: I prefer a business class.

ASSISTANT: Sorry to inform you that, currently no flights are available with your requirements.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for choosing us.