You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Melissa Nelson here, and I want to travel from BOS to JFK.

ASSISTANT: Can I know your travel dates?

USER: Sure, my preferable dates are from 06/12 to 06/14.

ASSISTANT: Give me a minute, let me check the details.

USER: My connections limit is 0. Ok.

ASSISTANT: Sorry, there are no flights available with 0 connection limit.

USER: Thank you, for your help.

ASSISTANT: Welcome.