You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Dorothy Mitchell. I would like to travel from IAD to PHX.

ASSISTANT: Ok, please help me in your travel dates.

USER: My preferable dates are from 04/26 to 04/28.

ASSISTANT: I found a flight 1024 of UA airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Most welcome.