You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me to book a flight ticket from ORD to CLT?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Nov 3 to Nov 5.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Any other preferences?

USER: I want to return in the afternoon.

ASSISTANT: May I know your name?

USER: Benjamin Mitchell here.

ASSISTANT: Sorry, there are no flights found on your data.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.