You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Betty Lewis. Please book a ticket from CLT to ATL?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travel dates are Jul 13 and Jul 15 respectively.

ASSISTANT: Do you have any class preference?

USER: I would like to travel in the morning.

ASSISTANT: Do you have any connection limit?

USER: No other specifications.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thank you for information.

ASSISTANT: Thank you for opting us.