You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight ticket to buy accessories for my sister's wedding on 01/18 at CA-SFO.

ASSISTANT: May I know your connection and price limit?

USER: I need a connecting flight with in 500.

ASSISTANT: Can you please provide your further journey details?

USER: I would like to board at CA-OAK. 01/20 is my return date.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we found an airline: UA, flight number: 1012 with a single connection and price is 100.

USER: You can proceed booking with this airline.

ASSISTANT: May I know your good name?

USER: I am Nicole Lee.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.