You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me in doing a reservation from ATL to MCO?

ASSISTANT: May I know your travelling dates?

USER: My trip dates are Sep 26 to 28.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any preference?

USER: I need a connecting flight which returns in evening.

ASSISTANT: Can I know your name?

USER: I am Donna Collins.

ASSISTANT: Sorry, there is no flight with your requirement.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.