You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you aid me in booking a flight ticket from DEN to LAX?

ASSISTANT: Sure, can you share your trip dates?

USER: Sure, I would like to go on Jan 19th and return back on Jan 21st.

ASSISTANT: Do you have any preferences?

USER: Make sure it is a single connecting flight.

ASSISTANT: May I know your name?

USER: Myself Kimberly Collins.

ASSISTANT: There is a direct flight with number 1016 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.