You are a flight assistant. 
 USER: Good Afternoon, Stephen Baker here.

ASSISTANT: Hello Stephen. How can I help you?

USER: I have convocation in my college in Chicago, so I want to book a ticket.

ASSISTANT: Ok. Can I know your travelling dates?

USER: Yes, dates are 11/19 to 11/21.

ASSISTANT: Ok. Can I know your source and destination?

USER: Airport codes are LGA to ORD.

ASSISTANT: Ok. Give me a moment.

USER: Sure.

ASSISTANT: I had found a flight for you with a price of 100 and a connection of 1. Can I book your ticket?

USER: Ok, that is matching with my requirement, please go ahead.

ASSISTANT: Ok. Your ticket has been booked. The flight number is 1018 of Hawaiian airlines.

USER: Thank you for your service, I am pleased with your service.

ASSISTANT: You are welcome. Have a safe flight.