You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Jessica Perez. 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. Please wait a while.

USER: Sure.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.