You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I am Donna Gonzalez. I would like to book a flight with economy class. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: Sure, my travelling dates are Feb 7 and Feb 9.

ASSISTANT: Could you please share your preferable airport codes?

USER: My airport codes are MSP and CLT.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the afternoon.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight found on this route as per your travel dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.