You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: World Series is to be held on 07/24 at Houston, HOU.

ASSISTANT: Ok.

USER: I need to book a ticket with my parents under the price limit of 200.

ASSISTANT: Sure, we are here to make your journey comfort. Do you need any halt in your journey?

USER: I need a halt.

ASSISTANT: May I know your origin airport code?

USER: Las Vegas, LAS is my code.

ASSISTANT: Kindly, mention your return date.

USER: 07/26, I will return.

ASSISTANT: May I know your good name for further process?

USER: Rebecca Scott is my name.

ASSISTANT: No flights found on your journey locations.

USER: Ok. Thank you for your information.

ASSISTANT: Thank you, have a nice day.