You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you find a flight for me from IAD to BOS?

ASSISTANT: Sure, can I know the travel dates please?

USER: Ok, my journey dates are from May 13 to 15.

ASSISTANT: May I know your name please?

USER: Sure, I am Joseph Young.

ASSISTANT: Can I know the connection limit please?

USER: I would like to depart in the morning time with single connection.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for approaching us.