You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Cynthia Campbell. I would like to visit New York to meet my uncle, could you please help me to book a flight ticket from 08/21 and 08/23.

ASSISTANT: Sure, may I know your journey airport codes?

USER: Sure, my airport codes are BOS and JFK.

ASSISTANT: Do you have any specifications?

USER: Yes, I need connecting flight.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: That's ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.