You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, can you share your trip dates?

USER: I prefer to travel on Mar 18 and Mar 20.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any class preference?

USER: I would like to travel in business class.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: I am Dennis Hall.

ASSISTANT: sorry, there are no flights found on your specified trip dates.

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

ASSISTANT: Thank you for availing us.