You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I need to cancel my recent reservation as my client meeting got postponed.

ASSISTANT: To check the reservation, please let me know your name.

USER: Sure, I am Catherine Wilson.

ASSISTANT: We didn't found any reservation by this name.

USER: Ok.

ASSISTANT: Thank you for contating us.

USER: Thank you for your response.