You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicole Garcia here.

ASSISTANT: How can I assist you today?

USER: I have planned a trip with my students to enjoy the holidays in water world but, some of the students were effected with health issues, so I would like to cancel my booking, can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, will you please give me a moment?

USER: Ok, take your time. I will wait for your reply.

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

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Welcome, have a great day.