You are a flight assistant. 
 USER: Hello. I am Jessica Walker.

ASSISTANT: Hello, how can I support you today?

USER: I want to change my reservation due to snowfall at my place.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your good name.

USER: Ok. Thank you for your response.

ASSISTANT: Thank you for opting us.