You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I am here to help you. May I know your name to check with the status?

USER: My name is George Nelson.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, George Nelson.

USER: Thank you for your help.

ASSISTANT: Sorry, there is no active reservation found under your name to amend.

USER: That's ok, thank you for your information, I will check other alternative.

ASSISTANT: Thank you for reaching us.