You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Samantha Smith. I am looking to book a flight to visit Houston, can you help me with that?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: My travelling dates are 06/16 and 06/18.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes are from DTW and IAH.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Please make sure that my connection limit should be 1.

ASSISTANT: Sure. Samantha, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.