You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Reserve a flight ticket that is from SEA to LAX. As I want to host a awards function in Los Angeles.

ASSISTANT: May I know your journey dates?

USER: I want to reach my destination by 05/19 and start on 05/17.

ASSISTANT: May I know your name?

USER: Shirley Martinez here.

ASSISTANT: Sorry, there is no flight available at your requested dates. Thank you for contacting us, have a nice day.

USER: Ok, that's fine. I will find another airline. Thank you.