You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want a direct flight to meet my friend from IAD to SFO. Can you find a flight ticket for me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, my itinerary dates are on Jan 02 and return on Jan 04.

ASSISTANT: Do you have any another specifications on your journey?

USER: No, thanks for asking.

ASSISTANT: May I know your name for the booking process?

USER: Ok, my name is Alexander Moore.

ASSISTANT: Sorry, no flight are available on your specified dates.

USER: Ok, not an problem.

ASSISTANT: Welcome, thank you for reaching us.

USER: Thank you for your information.