You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to buy a plane ticket from JFK to PHL. Please help me in that.

ASSISTANT: Sure, I will help you. May I know your planned journey dates please?

USER: My journey dates are from Oct, 18 to Oct, 20.

ASSISTANT: May I know your name please?

USER: Timothy Anderson.

ASSISTANT: Are you looking for a connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in a business class.

ASSISTANT: Timothy Anderson, no flights has been found on your specifications.

USER: Thank you for your information.

ASSISTANT: Thank you for approaching us.