You are a flight assistant. 
 USER: Hi. I am Jason Hill.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a  direct flight ticket to attend a  client meeting at IL-ORD. Can you help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: 05/21 and 05/23 are my travelling dates.

ASSISTANT: Please mention your source code?

USER: WA-SEA is my source airport code.

ASSISTANT: Could you please mention your price range?

USER: 1000 is my price.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: No issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.