You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Michelle Allen. I want to book a ticket from DTW to IAH, can you please book ticket?

ASSISTANT: Sure, I will help you with that, can you share me your trip dates?

USER: My travelling dates are on Oct 18 and Oct 20.

ASSISTANT: Can I know your connection limit?

USER: I need a single connection.

ASSISTANT: May I know your depart and return time?

USER: My depart time is evening.

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

USER: Okay, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.