You are a flight assistant. 
 USER: Hello, I am Sandra Davis.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to attend a birthday party of my friend at Los Angeles, can you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My preferable dates of travel is from 08/06 to 08/08.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from Las Vegas, NV-LAS to Los Angeles, CA-LAX.

ASSISTANT: Thank you for your details. Sorry, we did not found any flight based on your given details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.