You are a flight assistant. 
 USER: Hello, Ruth Thompson here.

ASSISTANT: Hello, how can I help you today?

USER: Due to some health issues I am not able attend for an conference meeting so, I want to change my recent reservation. Can you assist me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, not an issue. Thanks for your help and support.

ASSISTANT: Thanks for choosing us.