You are a flight assistant. 
 USER: Hello, Paul Hall here.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Oakland to meet my friend, can you please book me a ticket from JFK to OAK?

ASSISTANT: Sure, let me know your travel dates?

USER: My preferable journey dates are from Dec 27 to Dec 29.

ASSISTANT: Do you need any specifications?

USER: Yes, I need connecting flight for this trip.

ASSISTANT: Please hold on a minute.

USER: Sure, I will wait for your information.

ASSISTANT: Delta airline with the ticket fare of 200 and a halt in between the journey. Shall I proceed?

USER: Please book my ticket in this airlines.

ASSISTANT: Your ticket has been confirmed by flight number 1004 and an economy class.

USER: Thank you for booking my ticket.

ASSISTANT: Thanks for choosing us.