You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Robert Wright here.

ASSISTANT: How may I assist you?

USER: I would like to prefer a stopover flight for my business trip to Detroit. So can you book the flight ticket?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: The trip dates are from Nov 06 to Nov 08.

ASSISTANT: Could you share me your airport codes?

USER: Yes, the airport codes are from HOU to DTW.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Not a problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you.