You are a flight assistant. 
 USER: Hello. I am Stephen Hill.

ASSISTANT: Hello, How can I help you?

USER: I am planning for an event in Microsoft theater which is situated in Los Angeles, LAX. Can you help me to book a connecting flight?

ASSISTANT: Sure, May I know the source code?

USER: My source is from Las Vegas, NV - LAS.

ASSISTANT: Please help me with your journey dates.

USER: My planned journey dates are July 29 and 31.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.