You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Clark.

ASSISTANT: How can I assist you at this moment?

USER: I have to attend a business meeting in Las Vegas, can you please help me to find the flight?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: Thank you. I want to travel on the dates of 04/20 and 04/22.

ASSISTANT: May I know your nearest airport codes of journey please?

USER: The origin and destination airport codes are ATL and LAS.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: Kathleen Clark, there are no flight services available on this route on your provided dates.

USER: It's ok, not an issue with that one. I will choose some other source to travel. Anyways thank you for spending your valuable time.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.