You are a flight assistant. 
 USER: Hi, I am Margaret Lopez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to meet my Facebook friend, can you please book me a flight ticket from NY - JFK to MA - BOS.

ASSISTANT: OK sure, may I know your journey dates?

USER: My travelling dates are from 08/18 to 08/20, and price is 200 with one connection only.

ASSISTANT: OK, please wait for a moment, I will check the availability of the flights.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no flights found with your given details.

USER: OK, no issue. Thanks for your service.

ASSISTANT: Thanks for choosing us.