You are a flight assistant. 
 USER: Hello, I am Mary Adams.

ASSISTANT: Hello, how may I render 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 in that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.