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

ASSISTANT: Hello. How may I guide you at this moment?

USER: I would like to book a ticket to visit Campus Martius Park at Detroit, DTW. Can you book a ticket from Phoenix, PHX?

ASSISTANT: Sure, please share your departure and arrival dates?

USER: I want to depart on 12/04 and return back on 12/06.

ASSISTANT: Ok, do you need any halt in between the journey?

USER: Yes, I need a halt.

ASSISTANT: There are no flights found on your requested dates.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us.