You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Katherine Nelson.

ASSISTANT: How may I help you?

USER: Can you please book me a plane ticket from SFO to DEN?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my trip dates are from 05/20 to 05/22.

ASSISTANT: I found a flight for you in JetBlue airlines with price 100. Can I proceed?

USER: Ok, please proceed and confirm my reservation.

ASSISTANT: Ok, your booking is confirmed with flight number 1009.

USER: Thanks a lot.

ASSISTANT: Thank you for choosing us.