You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation. My mother is not feeling well I need to take my mother to hospital. So can you please help me out?

ASSISTANT: Sure, may I know your name for cancelling your reservation?

USER: I have reserved my flight ticket with my name Justin Lewis.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, fine thank you for your help.

ASSISTANT: Thank you for choosing us.