You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my reservation as may match got cancelled. Will you please help me out?

ASSISTANT: Sure, may I know your name to check the reservation?

USER: I am David Carter.

ASSISTANT: Sorry, there is no reservation with your given name.

USER: Ok fine, thanks for your response.

ASSISTANT: Thank you for reaching us.