You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you please tell me how may I guide you?

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

ASSISTANT: Sure, I am happy to guide you with the ticket booking. Please share your planned travel dates.

USER: I am travelling on these dates Feb 26th and 28th.

ASSISTANT: Ok, do you have any preference related to connection limit?

USER: I need single connected flight.

ASSISTANT: Ok, may I know your name please?

USER: Michelle Turner here.

ASSISTANT: Ok, please wait a minute.

USER: I need a business class.

ASSISTANT: Sorry to inform you that, there are no flights available in the business class with the details you have given.

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

ASSISTANT: Most welcome. Thanks a lot for opting us.