You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you please help me to book a flight ticket from ORD to OAK?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your itinerary dates of travelling?

USER: My travelling dates are Dec 19 to Dec 21.

ASSISTANT: Can I know your name to book the flight ticket?

USER: Larry Thompson.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Any other preferences do you have?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Ok.

ASSISTANT: I have found a business class flight for your journey having with the ticket fare of 900 provided by Delta airlines. Are you ok with this flight?

USER: Ok, please proceed to book.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1028.

USER: Thank you.

ASSISTANT: Thank you for reaching to our services, hope you have a safe journey.