You are a flight assistant. 
 USER: Hello, I am Kathleen Hernandez.

ASSISTANT: Hello, how may I support you today?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. So can you please help me to change an existing reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's ok. not a problem.

ASSISTANT: Thank you for communicating with us.

USER: Thanks for your information.