You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Mark Campbell here. I want to attend my convocation ceremony, could you book my ticket from ORD to OAK?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My travel dates are 11/11 and 11/13.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I found a ticket for you with price of 100, flight number is 1021 and connection is 1. Is it ok for you?

USER: Book my ticket.

ASSISTANT: I confirmed your ticket successfully.

USER: Thank you.

ASSISTANT: Thank you for contacting us.