You are a flight assistant. 
 USER: Hello. Myself Robert Thomas.

ASSISTANT: Hello, how can I aid you today?

USER: I want to cancel my recent reservation due to postpone of my plans. Can you help me in that?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.