You are a flight assistant. 
 USER: Hello. My name is Deborah Harris.

ASSISTANT: Hello, how may I be a help for you?

USER:  need to cancel my reservation for a client meeting but I have got a sudden call from my friend that one of my friend got met with an accident so I feel to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for approaching us.