You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Robert Moore here.

ASSISTANT: Nice to meet you Robert.

USER: I want to cancel my recent reservation due to my health issue. Will you help me over that?

ASSISTANT: Sorry to say this Robert, there are no flights with your registered name.

USER: Ok, thank you for your information.

ASSISTANT: Welcome.