You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my current reservation because my project has been extended. Can you help me?

ASSISTANT: Sure, could you please provide me with your name for cancelling purpose?

USER: Ok. My name is Charles Hall.

ASSISTANT: Ok Charles, please wait for a mean while.

USER: Sure. Take your own time.

ASSISTANT: Sorry Charles, there is no reservation found on your name to cancel your reservation.

USER: That's fine, not an issue. Thank you for your help.

ASSISTANT: You are welcome.

USER: Most welcome.