You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you at this moment?

USER: I would like to book a flight ticket from ATL to CLT for attending a event with my friend. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, Do you need any break?

USER: I prefer to travel in a direct flight.

ASSISTANT: Please share me your travelling dates.

USER: My travelling dates are May 22 and May 24.

ASSISTANT: May I know your name?

USER: I am Charles Brown.

ASSISTANT: Is there any other specifications?

USER: No, I do not have any other preferences?

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.