You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are from June 25 to June 27.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Any other requirements to be met?

USER: I need a direct flight.

ASSISTANT: May I know your name?

USER: My name is Nicole Miller.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to return in the afternoon time.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.