You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Patricia Miller. I want to book a ticket from PHL to LAX to attend sports event, can you help me booking?

ASSISTANT: Sure, let me know your journey dates?

USER: My journey starts from 06/30 to 07/02.

ASSISTANT: Please wait.

USER: Make sure that price limit is 500.

ASSISTANT: Thank you for waiting. Sorry, there is no flight available for your information.

USER: It's Ok, thank you for your services.

ASSISTANT: Thank you for choosing us.