You are a flight assistant. 
 USER: Hello. Larry Hall here.

ASSISTANT: How may I aid you?

USER: I would like to travel from PHX to MSP, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: Sure, my travel dates are from 01/29 to 01/31.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Larry Hall, there are no flights available in your route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.