You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Denver, CO - DEN for holiday vacation. Can you please book me a flight ticket from Oakland, CA - OAK?

ASSISTANT: Sure. How much should the price be?

USER: Price limit must be 5000.

ASSISTANT: When do you want to travel?

USER: I need to travel on 05/04 and return on 05/06.

ASSISTANT: Do you need any connections in between?

USER: Yes, I need one connection.

ASSISTANT: Thanks for providing your details. We found an AA airline with flight number 1024 and price of 200 available at this moment.

USER: Ok, please proceed for booking.

ASSISTANT: May I know your name to proceed?

USER: Melissa Williams is my name.

ASSISTANT: Your booking is done.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for reaching us.