You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Christopher Nelson here. I want to travel from DTW to LAS for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Yes, can you please share your travelling dates?

USER: My departure date is 11/19 and return date is 11/21.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: There is a flight 1000 available with Frontier airlines, can I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you, have a safe flight.