You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, I will help you  in cancelling. Can you please help me with your name?

USER: Joseph Collins here.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Joseph Collins, sorry to say there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for reaching us.