You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Barbara Davis.

ASSISTANT: How can I help you today?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I am here to help you out. Please wait for a moment.

USER: Thank you for accepting my request.

ASSISTANT: Sorry Davis, I did not find any reservation under your name.

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

ASSISTANT: Thank you for choosing us.