You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my reservation due to some emergency issues, so please help me.

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: Sure, I am Helen Garcia.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: No worries, thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.