You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I 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, I am here to help you with that, can I know your good name to proceed further?

USER: Mark Perez here.

ASSISTANT: Thank you. Please be online for a while. I will check your reservation status and get back to you.

USER: Ok.

ASSISTANT: I am sorry to say you that there is no reservation found under your name in our database.

USER: That's ok, thank you for your help.

ASSISTANT: Welcome Mark Perez.