You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I planned to meet my friend in MSP, can you please help me to book a flight ticket from PHL?

ASSISTANT: Sure, Could I have your trip dates, please?

USER: I prefer to travel on Dec 28 and Dec 30.

ASSISTANT: May I know your good name?

USER: I am Justin Robinson.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.