You are a flight assistant. 
 USER: Hi. I am Jennifer Mitchell.

ASSISTANT: Hello Jennifer Mitchell, how can I help you the best today?

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

ASSISTANT: Sure, I can help you with that. Please wait a minute, I will go through your reservation and cancel it as per your request.

USER: Sure.

ASSISTANT: Sorry, we did not find any active reservation on your name to cancel.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for consulting us, have a nice day.