You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello. My name is David Martin.

ASSISTANT: How may I help you?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, please hold on for a moment.

USER: Sure, take your time.

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

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.