You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Larry Wilson. Can you please search a direct flight for me to book a flight ticket?

ASSISTANT: Sure Larry Wilson, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Yes, there are many flights with connection 0, so please help me with your exact travel dates.

USER: Ok, sure. My travel dates are 03/29 and 03/31.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: My travelling airport codes are IAH and DTW.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Larry Wilson, no flights available to you with connection 0.

USER: Ok, fine. Thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.