You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to sudden demise of my grand father. Will you help me in cancelling my ticket?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Thank you, I am Ronald Garcia.

ASSISTANT: Thank you, sorry no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for quick response.