You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am John Williams, I need to book a flight ticket to meet my friend in ATL. Can you please help me in booking my flight ticket from CLT?

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

USER: Thank you.

ASSISTANT: Can you please provide your preferable departure and return dates of travelling?

USER: Sure, my travelling dates are 05/05 and 05/07.

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

USER: Sure.

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

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

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