You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May I know your name please for further process?

USER: I am Elizabeth Williams.

ASSISTANT: Ok, please wait for a mean while.

USER: Sure, take your time.

ASSISTANT: Sorry Elizabeth, there is no active reservation found as per your name to cancel it in your database.

USER: No problem, thank you for the checking.

ASSISTANT: You are welcome.