You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Thomas Martinez, want to travel from PHX to MSP. Can you please help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My trip dates are from 01/19 to 01/21.

ASSISTANT: Do you have any specifications?

USER: I need a single halt in between my trip.

ASSISTANT: Thomas Martinez, there are no flights available in your route.

USER: it's ok, thank you.

ASSISTANT: Thank you for choosing us.