You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I just want to cancel my mother's reservation because she is not feeling well. Can you please help me to cancel her reservation?

ASSISTANT: Sure, I will help you in cancellation of the ticket.

USER: Thank you.

ASSISTANT: May I know your mother's name to check the reservation status?

USER: Yes, her name is Sarah Carter.

ASSISTANT: There is no reservation found with your mother details.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for choosing us.