You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you at this moment?

USER: I want to book a direct flight to meet my cousin at DEN, can you help me with booking?

ASSISTANT: Sure, can you share me your trip dates?

USER: My trip dates Oct 01 and Oct 03.

ASSISTANT: Can I know your source code?

USER: My source airport code is LAS.

ASSISTANT: Let me know if you have any other specifications?

USER: No.

ASSISTANT: Sorry to inform this, no flights are found on your desired route.

USER: Ok, no problem.

ASSISTANT: Can I know your good name?

USER: I am William Miller. Thank you.

ASSISTANT: Thank you for reaching us.