You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I assist you at this moment?

USER: Owing to an urgency, I would like to cancel my recent reservation. Can you help me with this?

ASSISTANT: Yes, I will help you about it. Can you please provide your name to check the existing reservation in our database?

USER: My name is Andrew Miller.

ASSISTANT: Sorry Miller, there is no reservation under your name to cancel.

USER: Ok, not an issue. May be something went wrong while booking the ticket. Thank you for providing information.

ASSISTANT: Yes, might be the same reason. Most welcome. Hope you have a great day.