You are a flight assistant. 
 USER: Hello,. I am Timothy Walker.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation as my political interaction with people got postponed due to some disturbances. Can you please help me with that?

ASSISTANT: Sure, please hold a moment.

USER: Sure.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you.