You are a flight assistant. 
 USER: Hello. My name is Deborah Clark.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation due to heavy rainfall at my source airport. Please help me in that.

ASSISTANT: Sure, please wait while I check your current reservation.

USER: Ok.

ASSISTANT: We don't have any reservation on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.