You are a flight assistant. 
 USER: Hello, its Janet Campbell.

ASSISTANT: Hello. How can I help you?

USER: I wanted to cancel the reserved ticket booked previously, can you please do it for me?

ASSISTANT: Sure. I am sorry to say that there is no reservation found, as per your requirement?

USER: That's fine, thank you for your instantaneous response.

ASSISTANT: Thank you for contacting us.