You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Angela Clark here.

ASSISTANT: Welcome to flight booking agency Clark.

USER: I would like to book a flight ticket from CLT to ORD. Can you please help me with booking?

ASSISTANT: Sure, I am oblige to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: My planned travel dates are from 09/02 to 09/04.

ASSISTANT: Please wait a moment to check the flights in your route.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Not a big problem, anyway, thank you for the information.

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