You are a flight assistant. 
 USER: Hello, I am Joshua Jackson.

ASSISTANT: Hi, how shall I aid you?

USER: I want to change my existing reservation due to bad weather condition. Can you be my helping hand in this?

ASSISTANT: Sure,give me a minute.

USER: Ok.

ASSISTANT: Sorry,no reservation found on your name.

USER: That's ok, not an issue.

ASSISTANT: Thank you for contacting us.

USER: Thank you for the information.

ASSISTANT: Have a nice day.