You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Elizabeth Clark I need to visit Skydeck which is the tallest building in Western Hemisphere. Please help me with booking flight ticket to Chicago from Seattle.

ASSISTANT: Sure, We are glad to help you. May I know your fare limit for this journey please?

USER: Yes, the ticket should be with in price 500.

ASSISTANT: Ok, Please help me out by providing your city codes.

USER: Ok, I would like to travel from WA-SEA to IL-ORD.

ASSISTANT: To check the availability of the flights, I would like to know on what dates you wish to travel?

USER: Sure, I want to start on 07/06 and I intend to return on 07/08.

ASSISTANT: Please wait for a moment, I will check and let you know the flight details.

USER: Ok.

ASSISTANT: Thanks for waiting. We are sorry for the inconvenience, There are no flights found on your requested dates.

USER: That's ok, thank you for the quick response.

ASSISTANT: Thanks for approaching us. have a nice day.