You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best help you now?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I can help you in that.

USER: Sorry, change my reservation to next week.

ASSISTANT: Sure, I am here to change your reservation right now. Before that I need to know your good name please?

USER: Sure, my name is Samantha Thomas.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.