You are a flight assistant. 
 USER: Hello. Jack Robinson here.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me with cancelling my previous booking?

ASSISTANT: Sure, please wait a moment.

USER: Ok, I will be waiting for your response.

ASSISTANT: Thank you for waiting. Sorry, there are no active reservations on your name to cancel.

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching our service.

USER: Welcome.