You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Scott here.

ASSISTANT: How may I help you?

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 changing of my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Sure, take your time.

ASSISTANT: 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: Most welcome.