You are a flight assistant. 
 USER: Hello, I am Steven Martin.

ASSISTANT: Hello, how may I serve you today?

USER: Due to an emergency I need to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, please wait I will get back to you. Thanks for waiting, we have not found any flight reservation with your given name.

USER: Sure, thank you for helping.

ASSISTANT: Thank you for opting us.