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 have your name please?

USER: My name is Patrick Clark.

ASSISTANT: Sorry Patrick Clark, there is no reservation on your given name.

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

ASSISTANT: Thank you for reaching us.