You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Due to heavy rainfall at my destination airport, which is located in Orlando, So I want to change my reservation. Can you help me to change my reservation?

ASSISTANT: Sure, I'm always here to help you. Can you please provide your good name?

USER: Sharon Walker here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sharon Walker, there is no active reservation found under your name to do modifications in that.

USER: Oh, may be something went wrong at the time of booking. Anyways, thanks for the information.

ASSISTANT: Thank you for choosing us, have a nice day.