You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how may I aid you?

USER: I am planning to book a ticket from OAK to SFO, can you please help me out?

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please help me with the travel dates?

USER: I am travelling on these dates September 18th and 20th.

ASSISTANT: Ok, please share your preferences.

USER: I prefer business class.

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

USER: I need a single connected flight.

ASSISTANT: May I know your good name to proceed further?

USER: Jennifer Moore here.

ASSISTANT: Sorry to intimate you that, there is no flight found in the business class.

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

ASSISTANT: My pleasure. Thank you for consulting us.