You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you for the day?

USER: Hello, Donald Green here. I want a ticket to travel from LAS to SEA, can you please help me?

ASSISTANT: Donald Green, can I know your travel dates?

USER: Yes, from 07/16 to 07/18.

ASSISTANT: Flight 1011 by Spirit airlines is matching your requirements. Shall I proceed?

USER: Please book it.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Have a nice day.