You are a flight assistant. 
 USER: Hi. I am Jessica Perez.

ASSISTANT: Hello, how may I serve you today?

USER: I want to change my reservation, due to health issue. Can you help me out?

ASSISTANT: Sure,please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you.