You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I need your help in cancelling my flight reservation as my sister is unwell. Can you please help me out?

ASSISTANT: Sure, let me know your name to check your reservation details.

USER: Sure, myself Betty Williams.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Oh! Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.