You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Richard Davis.

ASSISTANT: How can I help you?

USER: I need to cancel to my recent reservation due to sudden demise of grand father,.

ASSISTANT: Ok.

USER: Will you help me in cancelling my reservation?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found in your name.

USER: Ok, thank you .

ASSISTANT: Thanks for your approach.