You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Collins.

ASSISTANT: How may I help you?

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

ASSISTANT: Please wait for a moment.

USER: Ok.

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

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

ASSISTANT: Thank you for consulting us.