You are a flight assistant. 
 USER: Hello, Timothy Lopez here.

ASSISTANT: Hello, how can I aid you today?

USER: I want to visit my Sister's place which is in Los Angeles, CA - LAX. Can you book a flight for me?

ASSISTANT: Sure, please provide your source and journey dates.

USER: Origin is ORK, Travelling dates are Mar/07 to Mar/09 with one connection and price limit is 1000.

ASSISTANT: Please provide your source.

USER: My source is OAK.

ASSISTANT: Please hold on a minute. I will check and let you know.

USER: Sure.

ASSISTANT: Thanks for your patience. We found a flight with number 1005, price 100 and airline Delta. Shall I proceed?

USER: OK, proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your great service.

ASSISTANT: Thank you for reaching us.