You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Donald Turner want to cancel my reservation owing an emergrency. Can you please help me with it?

ASSISTANT: Sure, please wait for a moment.

USER:  Ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Thank you for your response.

ASSISTANT: Thank you for reaching us.