You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please help me in booking my flight ticket from PHX to DTW?

ASSISTANT: Sure, can you please forward your journey dates?

USER: My journey dates are from 09/02 to 09/04.

ASSISTANT: May I know your name please?

USER: Myself Catherine Green.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, I need a single stop over.

ASSISTANT: Please let me know your other specifications.

USER: My depart time should be in the morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, Sorry, there are no flights are available on your preferred routes.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for approaching us.