You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to cancel my reservation as I cannot board my flight due to family problem?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Gary Lewis.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your given name.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.