You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Amy Clark, want to travel from ATL to IAH.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 03/10 to 03/12.

ASSISTANT: There is no flight available.

USER: It's ok, thank you.

ASSISTANT: Most welcome.