You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to meet my nephew on his birthday, could you book my ticket from OAK to JFK?

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

USER: My itinerary dates are Jan 9 and Jan 11.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Do you have any other specifications to be met?

USER: I need a connecting flight.

ASSISTANT: May I know your name to proceed?

USER: Sarah Hill here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: No problem, I will find an alternative mode of transport.

ASSISTANT: Thank you for opting us.

USER: Thank you for assisting me.