You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Timothy Lewis. Can you please help me in booking from LAS to ATL?

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

USER: I want to travel on 08/23 and need to catch return flight on 08/25.

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

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for contacting us.