You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation, Can you please help me in that?

ASSISTANT: Sure, can you share your name?

USER: My name is David Hill.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.