You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Jacob Johnson. I need to book a flight ticket from PHL to JFK. Please help me in booking a flight ticket.

ASSISTANT: Sure, can you please provide your journey dates?

USER: My journey dates are from 03/15 to 03/17.

ASSISTANT: Do you have any specifications to be met?

USER: I need to depart in the evening and I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.