You are a flight assistant. 
 USER: Hello, I am Stephanie Carter.

ASSISTANT: Hello, how may I help you?

USER: I want to change my existing reservation due to heavy rainfall. Could you please help me?

ASSISTANT: Sure, please stand by I will revert you.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation found with your name.

USER: No issues, Thank you for your information.

ASSISTANT: Have a nice day.