You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Donna Hernandez here. Can you make my reservation from SFO to SEA?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: My travelling dates are from 06/16 to 06/18. Please make sure, I want direct flight.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you and have a nice day.