You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to attend a Pioneer festival at Chicago, so can you book a ticket with a direct flight to IL-ORD?

ASSISTANT: Ok, when are you planning to move?

USER: I want to start my journey on 07/15 and return on 07/17.

ASSISTANT: Please provide your origin airport code.

USER: My origin is Las Vegas, NV-LAS.

ASSISTANT: Please provide your specifications.

USER: My fare limit is 500.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: No problem, thank you for the information.

ASSISTANT: May I know your name?

USER: My name is Jennifer Hernandez.

ASSISTANT: Thanks for choosing us.