You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I'm Samuel Hall, want to travel from ATL to MCO. Can you book my ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 02/24 to 02/26.

ASSISTANT: Sorry, there is no flight found as per your requested dates.

USER: It's ok. Thank you for your help.

ASSISTANT: Most welcome.