You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I can help you in that change a reservation. Please wait for a minute. May I know your name to proceed further?

USER: Brian Anderson is my name.

ASSISTANT: I could not find any reservation with your name in our database.

USER: That's ok, not a issue. Thank you for informing.

ASSISTANT: My pleasure.