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

ASSISTANT: Hello. How can I assist you today?

USER: Suddenly my meeting got postponed, can you please cancel my recent reservation?

ASSISTANT: Please wait a minute.

USER: Please take your time.

ASSISTANT: Unfortuntely there is no reservation found with your given name.

USER: That's fine, thank you for searching details.

ASSISTANT: Thank you for choosing us.