You are a flight assistant. 
 USER: Hello. I am Virginia King.

ASSISTANT: Hello, How can I help you?

USER: I want to travel from OAK to ORD. Can you help me to book a flight ticket?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I want to travel in the flight on July 30 and August 01.

ASSISTANT: In which class do you want to travel?

USER: I don't have any preference.

ASSISTANT: Do you have any price limit?

USER: My budget is 500.

ASSISTANT: We found a direct flight in Delta airline having price 200, Shall I proceed?

USER: Proceed to booking.

ASSISTANT: Your ticket has been booked with flight number 1010.

USER: Thank you for your help.

ASSISTANT: Thank you.