You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to enjoy beer festival with my friends.So, can you please book a flight to LGA?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I want to start on 03/22 and return on 03/24.

ASSISTANT: Can you provide origin point?

USER: My origin point is ORD.

ASSISTANT: Do you have any limitations?

USER: I need a direct flight. Price limit is 5000.

ASSISTANT: Thanks for the information. We did not found any direct flights matching your criterion. Can you provide your good name?

USER: I am Virginia Harris.

ASSISTANT: Thanks for contacting us.

USER: Thanks for the information.