You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Kathleen Anderson here. I want to travel from DEN to OAK for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are from 05/29 to 05/31.

ASSISTANT: There is a connecting flight with number 1000 in airline UA, the fare is 200.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.