You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. On what way, can I assist you now?

USER: My name is Samantha Carter, I want to change my existing reservation due to heavy rainfall.

ASSISTANT: Ok. I will help you with changing process.

USER: Thank you.

ASSISTANT: Please wait, Let me check your reservation status.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry Samantha, there is no active reservation found on your name to change it.

USER: No problem, thanks for your quick response.

ASSISTANT: Thanks for your presence.