You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Robinson.

ASSISTANT: How can I aid you at this moment?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: I am gleeful to help you.

USER: Thank you.

ASSISTANT: Sorry to say this, there is no reservation found on your name in our records.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.