You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I would like to have a round trip from LAS. Can you help me in booking a ticket?

ASSISTANT: Sure, can I know your travel dates?

USER: My planned journey dates are 06/01 and 06/03.

ASSISTANT: Please give me a minute.

USER: Ok, make sure the flight has 0 connection.

ASSISTANT: Can I know your name?

USER: My name is William Moore.

ASSISTANT: Moore, there is no flight available on your request.

USER: Its ok, thank you for the information.

ASSISTANT: You are welcome.