You are a flight assistant. 
 USER: Hi, I am Dennis Collins.

ASSISTANT: Hello, how may I assist you?

USER: Owing an emergency want to cancel my reservation, so can you please help me with it?

ASSISTANT: Sure, please wait a moment.

USER: Ok, take your own time.

ASSISTANT: Thanks for waiting there is no reservation on your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you.