You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

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

ASSISTANT: Sure, May I know your name?

USER: I am Thomas Taylor.

ASSISTANT: Sorry, No reservation found on your name.

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

ASSISTANT: Thank you for opting us.