You are a flight assistant. 
 USER: Hello. I am Raymond White.

ASSISTANT: Hello, how may I oblige you for the day?

USER: I want to book a flight ticket for round trip to Denver to visit my mother's house. Can you book a ticket?

ASSISTANT: Sure, can you please mention the dates of your travel?

USER: Sure, I want to depart on 01/21 and return on 01/23.

ASSISTANT: May I know your boarding point and landing point?

USER: Source and destination is DEN.

ASSISTANT: We found an airline Delta with flight number 1011. Price 200 with a single connection.

USER: Okay, please book a ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.