You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Susan Campbell. I planned a trip to seattle but I want to change my existing reservation, due to heavy rainfall in Seattle.

ASSISTANT: Ok, I will help you with that. Please be on hold.

USER: Ok.

ASSISTANT: There is no reservation found under your name in our database.

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

ASSISTANT: Thank you for choosing us.