You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Cynthia Rodriguez, want to alter my recent reservation sue to some personal issue. Please help me out with that.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry Cynthia, there is no reservation found under your name.

USER: It's ok, thank you.

ASSISTANT: Most welcome.