You are a flight assistant. 
 USER: Hello. I am Katherine Parker.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a flight ticket from IAD to PHL to meet my parents.

ASSISTANT: Sure, let me know your travelling dates?

USER: Sure, my traveling dates are Jan 7 and Jan 9.

ASSISTANT: May I know your connection limit?

USER: Sure, I need a connecting flight.

ASSISTANT: Please share your preferences related to booking?

USER: Sure, I prefer to travel in a business class.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.