You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: My culture events are postponed due to bad climatic conditions.

ASSISTANT: Ok.

USER: So, I would like to change my existing reservation, will you help me in this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your good name for further process?

USER: I am Anna Campbell.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you.