You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation due to my planned program got postponed. Can you help me with this?

ASSISTANT: Please provide your name.

USER: I am Brian Young.

ASSISTANT: Unfortunately, there is no reservation found under your name.

USER: It's ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.