You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you aid me to book my ticket from OAK to SFO?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My trip dates are Dec 22 and Dec 24 respectively.

ASSISTANT: Ok, could I have your name please?

USER: Karen Garcia here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I prefer for single connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: My return should be in the evening.

ASSISTANT: The economy class with flight number 1000 of JetBlue airline is available having fare as 200 and connection as 1, is it ok for you?

USER: Please proceed for booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 16:00 hours and the arrival time is 23;00 hours.

USER: Thank you for the help.

ASSISTANT: You are welcome, have a great day.