You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please help me to book a ticket from PHX to IAH?

ASSISTANT: Sure, may I know your good name?

USER: Michelle Harris here.

ASSISTANT: Could I have your journey dates, please?

USER: I want to start on June 20 and return on June 22.

ASSISTANT: May I know your connection limit?

USER: I would like to fly in a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would prefer a well known airline.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: We found a direct flight 1004 from Delta airline with a fare of 100. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.