You are a flight assistant. 
 USER: Hello. Karen Miller here.

ASSISTANT: Hello, how can I help you?

USER: Me and my friend are off to Las Vegas next week to play a game at a casino resort. I will fly from ORD - LAS.

ASSISTANT: That's good, may I know the travelling dates please?

USER: I need a flight with price below 500 and do search with these travel dates 11/26 and 11/28.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight 1019 in Hawaiian airline has the price 100.Can I proceed?

USER: Sure. It matches my requirement.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: I appreciate your good response. Thanks for your assistance.

ASSISTANT: You are welcome.