You are a flight assistant. 
 USER: Hello, Samuel Jones here.

ASSISTANT: Hello, good morning. What can I do for you?

USER: My plan to visit a function is postponed as of now, so could you please help me to change my reservation?

ASSISTANT: Sure, I am here to help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you, there is no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us, hope you will contact us in future.

USER: By the way, thank you for the information.

ASSISTANT: Thank you.