You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michael Carter.

ASSISTANT: How can I help you today?

USER: Can you help me in changing my recent reservation, as my business trip got cancelled?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name in our records.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.