You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to visit at PHL to meet my best friend, can you help me to book a flight ticket from JFK?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are 21 and 23 of July.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May, I know your good name?

USER: Laura Wilson.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.