You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicole Moore. I would like to book a ticket from ORD to JFK, can you help me?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travel dates are June 29 and July 01.

ASSISTANT:  Here is a connecting flight with flight number 1001 and fare is 100, providing ticket in economy class. Shall I proceed with booking?

USER: I need a flight in business class, can you check for it?

ASSISTANT: Ok, please wait I will check and let you know.

USER: Sure.

ASSISTANT: Sorry, no tickets are available in business class.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.