You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket from JFK to ORD to meet my friends. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, when are you planning your trip to Chicago?

USER: My trip dates are May 4 and May 6.

ASSISTANT: Which class do you prefer to travel?

USER: I need a business class.

ASSISTANT: Sure, is there any specific depart and return time you have?

USER: I want to depart in the morning.

ASSISTANT: May I know your connection limit?

USER: I need a stop over in between the journey.

ASSISTANT: Do you have any other preference?

USER: No, I do not have any other preferences.

ASSISTANT: Sorry to inform you that we have exhausted with business class seats in all of our flights.

USER: No worries, thank you for the information.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Janet Johnson.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.