You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a ticket from SEA to JFK, can you please help me out?

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

USER: I am travelling on these dates Dec 3rd and 5th.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need single connected flight.

ASSISTANT: Do you have any preferences about class?

USER: I prefer business class.

ASSISTANT: Please mention your name.

USER: Brenda Brown here.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Welcome, have a great day.