You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I'm Betty King. I am planning to attend music concert at ORD, can you please help me with booking a flight ticket from BOS?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, I would like to take off on 07/19 and return back on 07/21.

ASSISTANT: Please wait a while.

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

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, no issues.Thank you for checking.

ASSISTANT: Thank you for opting us. Have a nice day.

USER: You are welcome.