You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER:  I am Samantha Johnson want to cancel my reservation owing an emergency meeting. Can you help me in cancelling?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Sorry, no reservation found on given name.

USER: No issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.