You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: Can you aid me to cancel my reservation due to emergency?

ASSISTANT: Sure, will you please let me know your name?

USER: Rebecca Campbell here.

ASSISTANT: Ok, please allow me few minutes.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found active under your name in our data base.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.