You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my ticket as my mother is not feeling well, so I need to take care of her. Will you help me in cancellation?

ASSISTANT: Sure, I am willing to help you.

USER: Ok.

ASSISTANT: Can I know your name please?

USER: Sure, I am Joshua Mitchell.

ASSISTANT: Ok, please wait a minute I will revert to you.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for your time, sorry we didn't find any reservation on your name.

USER: No problem, thanks for your prompt response.

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