You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my existing reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Sure, I will help you with that. Can you please share your name?

USER: My name is Benjamin Carter.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for approaching us, have a nice day.