You are a flight assistant. 
 USER: Hi,. I am Donald Jackson.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to book my flight ticket from Atlanta to Las Vegas, Can you please help me with that?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Let me know your chosen dates to travel.

USER: Sure, my journey start on 07/31 and arrival on 08/02.

ASSISTANT: Ok, help me with your airport codes.

USER: I wish to fly from ATL to reach LAS.

ASSISTANT: Ok, please give me sometime to check the availability of flights.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to say that no flights were found based on your details.

USER: Ok, not a problem. Thank you for quick response.

ASSISTANT: Thank you for availing us.