You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Barbara Martin. I have to attend a musical concert in Oakland, so I need a flight ticket from  Los Angeles.

ASSISTANT: Sure, could your please share your journey dates to search a flight?

USER: Ok, my travelling dates are 12/14 and 12/16.

ASSISTANT: Let me know your preferred airport codes?

USER: The origin and destination airport codes are LAX and OAK.

ASSISTANT: May I know your price limit?

USER: The price limit should not exceed 1000.

ASSISTANT: I have found a flight-1000 of Delta airlines, shall I proceed with price 100?

USER: Ok, please proceed with ticket booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking my flight ticket.

ASSISTANT: You are welcome, have a nice day.

USER: You are most welcome.