You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please book a connecting flight from HOU to DTW?

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

USER: Sure, my travelling dates are June 24 - June 26.

ASSISTANT: May I know your connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you have any other requirement that you are looking for?

USER: Yes, I need a economy class flight which departs in the evening time.

ASSISTANT: May I know your name to proceed further?

USER: Stephanie Thomas here.

ASSISTANT: Stephanie Thomas, I am sorry to inform you that there is no flight available at your request.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.