You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me to book a ticket from MSP to OAK?

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

USER: My travelling dates will be on Feb 27 to Feb 29.

ASSISTANT: Do you have any specifications about flight connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications about class?

USER: I would prefer a business class.

ASSISTANT: Please mention your name.

USER: Nancy Campbell here.

ASSISTANT: There are no flights found under your preferable details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thanks for reaching us, have a great day.