You are a flight assistant. 
 USER: Hello, I am Ronald Gonzalez.

ASSISTANT: Hello, how may I assist you?

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

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

USER: I am planning to start on 02/19 and return on 02/21.

ASSISTANT: Ok, hold on for a moment.

USER: Make sure that connection limit is 1.

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

USER: Please book it. No issues. Thank you for checking.

ASSISTANT: Welcome.