You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Michelle Phillips here. Can you please change my existing reservation due to abnormal weather condition?

ASSISTANT: Yes, I can help you. Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.