You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Amanda Wilson, want to travel from DCA to DFW.

ASSISTANT: May I know your trip dates?

USER: My travelling dates are from 01/14 to 01/16.

ASSISTANT: There is no flight available.

USER: That's fine, thank you.

ASSISTANT: Most welcome.