You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My mother is not feeling well I have take her to hospital, so can you please cancel my recent reservation?

ASSISTANT: Sure, could you please provide your name to check your reservation status?

USER: I have reserved my flight ticket with name Robert Robinson.

ASSISTANT: Ok, please hold on for a moment I will check your complete reservation details and proceed further.

USER: Ok, take your own time.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: Ok, thank you for  checking.

ASSISTANT: Thank you for choosing us, have a nice day.