You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Can I know your name?

USER: Sure, Melissa Walker here.

ASSISTANT: Sorry, there is no reservation by your name.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for your information.