You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: Please cancel my reservation which is with the name Jack Allen.

ASSISTANT: Sure, let me go through the reservation list and revert you.

USER: Ok.

ASSISTANT: We could not find any reservation by this name.

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

ASSISTANT: Thank you for consulting us.