You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help 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 change my reservation. Can you please help me out with that?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT:  May I know your name for further process?

USER: Sure, I am Christopher Jones.

ASSISTANT: Please hold on a moment, I will check your reservation status.

USER: Sure, take your time.

ASSISTANT: There is no active reservation on your name Christopher Jones.

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

ASSISTANT: You are welcome.