You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Angela Collins here. I would like to book a ticket from PHX to MSP, can you please help me with that?

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

USER: The travel dates are from 09/17 to 09/19.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: Angela Collins, there are no flights available in your route.

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

ASSISTANT: Thank you for reaching us.