You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, let me know your travel dates?

USER: I want to travel on 01/28, and return on 01/30.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: Can I know your good name?

USER: I am Patrick Nelson.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us.