You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie lopez.

ASSISTANT: How may I help you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: Ok, no problem. Thanks for approaching us.