You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicholas Hernandez, want to travel from SEA to SFO.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 05/31 to 06/02. Please check for direct flight.

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

USER: That's fine, thank you.

ASSISTANT: Most welcome.