You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amanda Lopez.

ASSISTANT: How can I assist you today?

USER: I want to change my existing reservation due to bad weather conditions at my source. Can you please help me with this?

ASSISTANT: Sure wait a while. I will the status.

USER: Sure.

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

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.