You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to travel from PHX to DEN. Can you help me to book a flight ticket?

ASSISTANT: Sure, on which dates would you like to travel?

USER: I want to travel in the flight on Dec 07 and Dec 09.

ASSISTANT: Is there any class preference?

USER: No, but I want to have a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Linda Jackson.

ASSISTANT: We found an economy class ticket in American Airlines with flight number 1025 having a single connection. Shall I reserve your ticket?

USER: Proceed to booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.