You are a flight assistant. 
 USER: Hi, I am Steven Collins.

ASSISTANT: Hello, how may I helpful to you?

USER: I would like to travel from SEA to attend for an event, can you help me to book a flight ticket?

ASSISTANT: Sure, let me know your dates of travel?

USER: My travelling dates are from 05/24 to 05/26.

ASSISTANT: Do you have any price limit?

USER: I need a ticket under 500.

ASSISTANT: May I know your destination code?

USER: Its Atlanta, GA-ATL.

ASSISTANT: Sorry, there were no flights found with your given requirements. Thanks for choosing us.

USER: Fine, thank you.