You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Gregory Mitchell. Do you have nay flight from LAX to meet my friend who was staying in IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 03/30 and 04/01.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight is available for you.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.