You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you? May I know your name please?

USER: My name is James Moore and I want to book a flight ticket from DC-DCA to WA-SEA.

ASSISTANT: Can I have your travelling dates please?

USER: Sure, my journey dates are from 03/01 to 03/03. My price limit is 1000 and connections limit is 1.

ASSISTANT: Sorry, there is no flight available regarding your details.

USER: It is sad to say.

ASSISTANT: Thank you, have a nice day.