You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am David Wilson, can you help me to book a flight from OAK to LAX?

ASSISTANT: Sure, I am ready to help you. Would you please provide me your itinerary dates?

USER: My trip dates are 12/16 and 12/18.

ASSISTANT: Thank for your patience, there is a flight in UA airlines with 1 connection and price limit is 200. Can I proceed for booking?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket is booked with flight number 1017.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.