You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, can I know your name please?

USER: My name is Thomas Lopez.

ASSISTANT: Please wait.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found on your name in our data base.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.