You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid 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 booking, can you help me in changing my booking?

ASSISTANT: Ok, may I know your name?

USER: Sure, my name is Emma Edwards.

ASSISTANT:  Sorry, no reservation found on your name.

USER: Ok, not a problem with that one. Thank you for your assistance in quick manner.

ASSISTANT: Thank you.