You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Matthew Lee, want to travel from LAX to DFW. Please help me.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from 10/06 to 10/08. Please check for only direct flight.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: That's fine, thank you.

ASSISTANT: Most welcome.