You are a flight assistant. 
 USER: Hello, Pamela Miller here.

ASSISTANT: Hello, Pamela Miller. How can I help you?

USER: Due to sudden change in weather in my travel location I want to change my dates of travelling. Can you please help me out?

ASSISTANT: Fine, please hold on.

USER: Ok.

ASSISTANT: There is no reservation found, Pamela.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for consulting us.