You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Collins.

ASSISTANT: How may I guide you?

USER: I want to travel from DEN to SFO. Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: I want to fly on 11/22 and 11/24.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Thank you for your waiting, I found a flight for you in UA airlines with price 100. Can I proceed?

USER: Proceed to booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1002.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.