You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Donna Anderson. I am planning to book a ticket from DEN. Can you please help me out to book  a ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I would like to travel on 11/21 and return back on 11/23.

ASSISTANT: May I know your destination airport codes?

USER: My destination code is OAK.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Make sure my connection limit is 0.

ASSISTANT: Here is a flight with ticket fare 100 in UA airlines with connection 0, would you like me to proceed with the booking?

USER: Yes, you can book it.

ASSISTANT: Your booking is confirmed with flight number 1016.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.