You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Mark Jones. I want to attend my brother's wedding at Denver, can you please help me to book my flight ticket from LAS to DEN?

ASSISTANT: Ok, please can I know the dates of your journey to book?

USER: Yes, I want to take-off on July 3 and return back on July 5.

ASSISTANT: Ok, please can I know your flight specification?

USER: I only prefer for a single connection flight.

ASSISTANT: Ok, there is a flight with 1 connection limit and the airfare for your journey is 100 for a economy class flight. Can I book the flight 1022?

USER: Yes, please book the ticket for me.

ASSISTANT: Ok, the airlines which provides the service is Hawaiian. Thank you for choosing our agency.

USER: Thank you for your help.