You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How  may I guide you?

USER: I want to cancel my reservation because my mother is unwell, can you please help me out?

ASSISTANT: Sure, I am glad to help you. Can you tell me your name which is in your previous ticket?

USER: My name is Mary Allen.

ASSISTANT: Ok, can you please give me a minute?

USER: Sure.

ASSISTANT: Sorry for the trouble, there is no reservation found on your name in the confirmation chart list to cancel.

USER: No problem, thank you for checking.

ASSISTANT: You are most welcome. Thank you for choosing us.