You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Owing to an emergency, my meeting with client got cancelled, so I want you to cancel my recent reservation.

ASSISTANT: Sure, can I know your name please?

USER: Sure, Karen Clark here.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: We did not find any reservation on your given name.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for choosing us.