You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Roberts.

ASSISTANT: How may I help you today?

USER: Can you please help me in booking a flight ticket from PHL to DTW?

ASSISTANT: Sure, I am here to help you with that. Can I have your travelling dates?

USER: I would like to fly on Mar 13 and return on Mar 15.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a direct airline. I would like to return in the morning time.

ASSISTANT: Sorry to say that, there are no flight's available based on your connection limit.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.