You are a flight assistant. 
 USER: Hi. I am Joshua Phillips.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: There was no reservation found on your name.

USER: No issue.

ASSISTANT: Thank you.

USER: Thank you.