You are a flight assistant. 
 USER: Hi,. I am Patrick Smith.

ASSISTANT: Hello,. How can I aid you?

USER: Please book a flight ticket from Denver, CO - DEN to Los Angeles, CA - LAX.

ASSISTANT: May I know your travel dates?

USER: I will fly on 05/31 and recur on 06/02.

ASSISTANT: Do you have any preference?

USER: My airfare is 500.

ASSISTANT:  We found a connecting flight Spirit with flight number 1023 and fare is 100.

USER: Please make it confirm.

ASSISTANT: Your booking is done.

USER: Thanks for assisting me.

ASSISTANT:  Thank you.