You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to book a ticket from DTW to PHL. Can you please help me out?

ASSISTANT: Can you share your trip dates?

USER: I am planning to travel on Feb 18 and return back on Feb 20.

ASSISTANT: Do you need any connections?

USER: I am looking for a connecting flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Kathleen Clark.

ASSISTANT: Sorry, there is no flight found under your details.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.