You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: Owning to an emergency, I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I will help you with that. Can you please provide me your good name to check existing reservation?

USER: Sure, the previous reservation is done under the name Elizabeth Taylor.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting. Sorry Taylor, there is no reservation found under your name to cancel.

USER: Ok, no problem. Anyway's thank you for your information.

ASSISTANT: Most welcome. Thank you for choosing us.