You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Susan Lewis.

ASSISTANT: How can I assist you?

USER: I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from BOS?

ASSISTANT: Sure, can I  know your travel dates?

USER: Sure, I would like to take off on 01/04 and return back on 01/06.

ASSISTANT: Please give me a minute.

USER: Ok, but please make sure that the connection limit is 1.

ASSISTANT: I found a direct flight, is it ok for you? Sorry, there is no flight available on your request.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: You are welcome.