You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: This is Christopher Perez, can you hep me to book a flight ticket under price 200?

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are 03/29 and 03/31.

ASSISTANT: Please share your airport codes.

USER: My source airport code is CA-OAK and destination airport code is CO-DEN.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked, flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for opting us.