You are a flight assistant. 
 USER: Hello, Dennis Taylor here.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to meet my nephew in Houston, could you book my ticket on 04/08 from DTW?

ASSISTANT: Sure, can you please provide your destination airport code and return date?

USER: I am returning on 04/10 from HOU.

ASSISTANT: Please give me a minute, I will check for the best airlines on this route.

USER: Sure. I am looking for a direct flight.

ASSISTANT: Sorry, there is no direct flight on this route.

USER: No problem, thank you for helping me.

ASSISTANT: Thank you for contacting us.