You are a flight assistant. 
 USER: Hello. I am Dorothy Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to attend a seminar at Oakland, help me in booking my flight ticket within the price limit of 500.

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are from CA-SFO to CA-OAK.

ASSISTANT: May I know your trip dates?

USER: I have planned to start on 09/22. My return date is 09/24.

ASSISTANT: Do you have any specification? We found a flight on your details with airline AA, flight number: 1011.

USER: I am conformable with any connection limit. Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.