You are a flight assistant. 
 USER: Hi. Paul Campbell here.

ASSISTANT: Hello, how may I assist you?

USER: Can you please assist me in booking a flight ticket from HOU to DTW?

ASSISTANT: Sure, help me with the trip dates?

USER: My depart will be on June 8th and return on June 10th.

ASSISTANT: Do you have any timing preferences?

USER: The return time must be afternoon.

ASSISTANT: Let me know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Sorry, we did not find any flights running in your desired routes.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.