You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kathleen Smith.

ASSISTANT: How can I assist you Kathleen Smith?

USER: Can you help me in booking from DTW to IAH?

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

USER: I will fly on 12/29 and return on 12/31.

ASSISTANT: There is a service with AA airlines with 1 connection limit, shall I book your ticket?

USER: No, I need a direct flight. Don't book it.

ASSISTANT: There are no direct flights on this route.

USER: Thank you for your time.

ASSISTANT: Thank you for contacting us.