You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am looking for a flight from LAX to CLT, can you please help me in booking?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are Jan 16 and Jan 18.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I want to depart in afternoon.

ASSISTANT: Before check with the airlines, may I know your name please?

USER: Sure, my name is Lisa Lewis.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.