You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Jack Clark want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure, please wait a moment a I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.