You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Dorothy Martinez want to visit ATL, can you book a ticket from SEA?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, my travelling dates will be 03/03 and 03/05.

ASSISTANT: Do you have any specifications?

USER: Yes, my flight price should be within 500.

ASSISTANT: Sorry, there is no flight found on your given dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.