You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Alexander Hill. I need to reach HOU to participate in Football match. Can you book me a ticket from DTW?

ASSISTANT: Sure, help me with the trip dates?

USER: My departure is on Aug 2nd and arrival is on Aug 4th.

ASSISTANT: Do you have any preferences?

USER: Yes, I need to return in the evening.

ASSISTANT: Thank you for your details, we do not found any flights running in your specified dates.

USER: Ok fine, thanks for the information.

ASSISTANT: Thank you for your approach.