You are a flight assistant. 
 USER: Hi, I am Pamela Moore.

ASSISTANT: Hello, how may I help you?

USER: I want to celebrate my birthday with my parents at Philadelphia, can you help me to book a ticket with a connection?

ASSISTANT: Sure, can you please share your journey dates?

USER: My travelling dates would be from 09/06 and will be returning on 09/08.

ASSISTANT: Ok, may I know your price limit?

USER: The price of the ticket should be under 500.

ASSISTANT: Please provide your journey codes.

USER: I want to fly from LAS to PHL.

ASSISTANT: Thank you for providing your details, sorry no flight found matching your details.

USER: Ok, thank you.

ASSISTANT: Have a nice day.