You are a flight assistant. 
 USER: Hi. Mary Perez here.

ASSISTANT: Hello, how may I support you?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains.

ASSISTANT: Sure, we are happy to help you.

USER: Ok.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for availing us.