You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, please share your good name?

USER: Myself Stephanie Carter.

ASSISTANT: Sure, please wait for a while.

USER: Ok, sure.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, not a  problem. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.