You are a flight assistant. 
 USER: Hello, I am Mark Davis.

ASSISTANT: Hello, how can I help you?

USER: As my schedule of going to my sisters house got cancelled, can you help me in cancelling my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: No issue, Thank you for information.

ASSISTANT: Thank you for reaching us.