You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Samuel Thomas here.

ASSISTANT: Hello Thomas.

USER: I want to visit a Gray Line City in New York, will you help me on booking?

ASSISTANT: Ok, when would you like to travel?

USER: I want to travel from SFO to JFK, make sure connection limit should be 0. I would like to travel on 02/13 to 02/15.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.