You are a flight assistant. 
 USER: Hello. This is Nicholas Young here.

ASSISTANT: Hello, how can I help you?

USER: I have planned to go for 3 days trip to Chicago, IL - ORD. Could you please book a ticket for me?

ASSISTANT: Sure, I am here to help you. Please provide me your travelling details?

USER: Sure, I want to start from Oakland, CA - OAK. My departure is on 09/06. My return day is on 09/08.

ASSISTANT: Is there any other specifications?

USER: Yes, price can be 200 and connection must be 1.

ASSISTANT: I found a flight for you, which matches your criteria.

USER: Flight details please?

ASSISTANT: Flight number is 1006, Frontier airline with the price of 100.

USER: Please proceed to book this flight.

ASSISTANT: Sure, Your booking is under process.

USER: Thank you for your service.

ASSISTANT: Your booking is confirmed, have a great day. Thanks for choosing us.