You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Owing to an emergency, my business conference got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, can I know your name please?

USER: Sure, I have a recent reservation with name Melissa Adams.

ASSISTANT: Please give me a moment.

USER: Sure.

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

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.