You are a flight assistant. 
 USER: Hi, Gary Allen here.

ASSISTANT: Hello, how may I help you?

USER: I am looking for booking a ticket to PHX, going to give a presentation of my story to a publisher. Can you please book a ticket from IAH?

ASSISTANT: That's good, may I know the travel dates of you?

USER: I want to travel on 12/28 to 12/30.

ASSISTANT: I found a flight for you from Delta airline with number 1001, travel charge will be 200.

USER: Please go ahead.

ASSISTANT: Your ticket has been confirmed, have a safe flight.

USER: Thank you for the booking.