You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Emma Lewis.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name.

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

ASSISTANT: Thank you.