You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Elizabeth Brown. I want to book a flight ticket to San Francisco to surprise my mother on her birthday.

ASSISTANT: Ok.

USER: Please help me out with a connecting flight.

ASSISTANT: Sure, we are here to help you. May I know your journey dates?

USER: My travelling dates are from 02/28 to 03/01.

ASSISTANT: Kindly, share your airport codes.

USER: I want to fly from CA- OAK to CA- SFO.

ASSISTANT: Do you have any specifications?

USER: I need the ticket within price 200.

ASSISTANT: No flights found on your journey dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.