You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am George Hernandez. I am planning to visit Boston Hop-on Hop-off trolley tour which is famous in BOS. Can you help me to book a connecting flight?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My trip dates are Mar 16 and 18.

ASSISTANT: Ok, may I know your source airport code?

USER: My source is from New York, JFK.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.