You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Michelle Allen.

ASSISTANT: How may I help you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in cancel reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.