You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Myself Linda Phillips. Due to heavy rainfall in my present location, I want to change my reservation which I have done last week. Will you please help me?

ASSISTANT: Hello Linda. Sure Linda, please give me a moment.

USER: Ok.

ASSISTANT: Sorry, Linda there no reservation found on this name.

USER: It's ok.

ASSISTANT: Thank you for reaching us.