You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I have to cancel my flight ticket that I unable to travel to meet my sister that she came to meet me, can you help me in that one?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I know your name?

USER: Sure, my name is Rachel White.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on given name.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching us.