You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Kevin Martin here. I want to attend a Marriage in Las Vegas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are DEN and LAS.

ASSISTANT: Kindly, mention your planned trip dates.

USER: My travelling dates are 09/21 and 09/23.

ASSISTANT: Do you need any halt in between journey?

USER: I would prefer single halt.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: We found a connecting flight of fare 100 with airline Hawaiian and number is 1002. Can I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for availing us.