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, we are here to help you in cancellation.

USER: Thank you.

ASSISTANT: Can I have your name to check the reservation list?

USER: Sure, Elizabeth Parker here.

ASSISTANT: Ok, please wait a moment I'll check the reservation status.

USER: Sure.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for approaching us.