You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Benjamin Lopez.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Minneapolis to meet my friend, can you please book me a ticket from JFK to MSP?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My preferable journey dates are from Dec 25 to Dec 27.

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight on this route.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Do you have any airline is preferences?

USER: No.

ASSISTANT: Please give me a moment. Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Welcome, have a great day.