You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Kathleen Lewis, I want to book a flight ticket to LGA to attend for a meeting. Can you please assist me for booking on the month of Oct?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned journey dates are 28 and 30.

ASSISTANT: Please provide me the source airport code.

USER: Sure, it is OAK.

ASSISTANT: Do you have any specifications?

USER: I want a business class.

ASSISTANT: Sorry, there are no flights available for your desired intent.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.