You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to  travel from MCO to LGA.

ASSISTANT: May I know your travelling dates?

USER: My departure is on 11/27 and my arrival is on 11/29.

ASSISTANT: Sorry to say that there is no flight found.

USER: Thank you for the help.

ASSISTANT: Thank you. May I know your name please?

USER: My name is Benjamin Harris.