You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Harris.

ASSISTANT: How can I assist you today?

USER:  I have to cancel my reservation which I have done earlier to participate in dance programme but unfortunately I have stay back here to take care of my injured friend. Can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I will definitely help you with that. Please give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: Ok, I think it might be cancelled by my manager that I am unable to travel the trip. Thank you for your kind service.

ASSISTANT: Welcome, have a great day.

USER: Welcome.