You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Frank Edwards here.

ASSISTANT: Welcome to flight booking agency Frank.

USER: I want to travel from CLT to PHX. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you. Could you please provide your preferable dates of travelling?

USER: My departure date is 03/08 and return date is 03/10.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights available in your locations with your requested dates of travelling.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.