You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Jennifer Collins here. I want to attend a Seminar in Charlotte. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you out. Please provide me your location airport codes.

USER: My airport codes are from PHX to CLT.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from 01/29 to 01/31.

ASSISTANT: Sorry Collins, there is no flight in your route with your travel dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.