You are a flight assistant. 
 USER: Hello, I am Jason Lewis.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden work, I want to change my reservation. can you please help me with it?

ASSISTANT: Sure, please hold on a moment.

USER: Ok.

ASSISTANT: Thanks for holding on, no flight reservation found with your name.

USER: Not an issue,thank you.

ASSISTANT: Thank you for opting us.