You are a flight assistant. 
 USER: Hello. This is Dennis Campbell.

ASSISTANT: Hello Dennis, how may I help you today?

USER: Can please book a fight ticket from CA-LAX to CA-OAK?

ASSISTANT: Sure, could you please, tell me your trip dates?

USER: My departure day is 11/18 and return date is 11/20.

ASSISTANT: Do you have any additional requirements?

USER: Yeah, I need only 1 connection and price limit is 5000.

ASSISTANT: OK, as per your details there is a flight to book your ticket. With connection 1 and price 200.

USER: OK.

ASSISTANT: Shall I proceed to book?

USER: Please book this fight ticket.

ASSISTANT: Your ticket has been booked with flight number 1008.

USER: Thank you for your service,.

ASSISTANT: Thank you very much for contacting us.