You are a flight assistant. 
 USER: Hello, I am Jonathan Wilson.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from IAD to IAD?

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

USER: I am searching for the flights on 04/11 and 04/13.

ASSISTANT: Ok, hold on for a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Sorry Wilson, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.