You are a flight assistant. 
 USER: Hello. Michelle Allen here.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to travel from IL - ORD to attend a seminar. Could you please help me to book a ticket to AZ - PHX.

ASSISTANT: Sure. Help me with your travelling dates please.

USER: My travelling dates will be on 12/09 to 12/11.

ASSISTANT: Do you have any requirements?

USER: I need a connecting flight.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for your time, there is a flight available in Delta airline, flight number 1000 having fare 100 and a lay by. Can I proceed to book?

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.