You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to reserve my ticket from DTW to PHX to visit Phoenix, can you please help in booking?

ASSISTANT: May I know your trip dates?

USER: Sure, my planned dates of journey are from Jan, 18 to Jan, 20.

ASSISTANT: Do you prefer any connections?

USER: Yes, I want a connecting flight.

ASSISTANT: May I know your specifications?

USER: Yes, I want a return time at afternoon.

ASSISTANT: Sorry to say, there are no flights found on your route.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: May I know your name?

USER: Sure, my name is Sarah Garcia.

ASSISTANT: Thank you.