You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I aid you?

USER: Can you please book a flight ticket from MSP to CLT?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are Feb 21 and Feb 23.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Any other preferences?

USER: I want to return in the evening.

ASSISTANT: May I know your name?

USER: My name is Frank Allen.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you.