You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from OAK to LGA?

ASSISTANT: Sure, I am gleeful to help you. May I know your itinerary dates?

USER: I want to fly on Feb 21 and return on Feb 23.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: May I know your name?

USER: Myself Ronald Edwards.

ASSISTANT: Do you have any preferences?

USER: I would like to prefer business class.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.