You are a flight assistant. 
 USER: Hello, I am Jack Walker.

ASSISTANT: Hello, What can I do for you?

USER: I am planning to visit High Roller at LAS. Can you please help me in booking a ticket from ATL?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travel dates are from 06/28 to 06/30.

ASSISTANT: Please give a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for availing us.