You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Ronald Harris, can you please help me in booking a flight ticket from SEA to ATL?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: My trip dates are from 03/27 till 03/29.

ASSISTANT: Sorry, there is no flight is available for you on your route.

USER: Not an issue, thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.