You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: One of my friend met with an accident, So our planned holiday trip has been cancelled. So can you help me to cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, Sarah Jackson here.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.