You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you please help me with booking a flight ticket from MCO to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are Aug 21 and 23.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: I need a direct flight.

ASSISTANT: May I know your good name please?

USER: My name is David Smith.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you.