You are a flight assistant. 
 USER: Hi, I am Cynthia White,.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I need to cancel my recent reservation due to postpone of my sister engagement. Could you please help me in doing that?

ASSISTANT: Sure, I am here to help you. Can you please wait for a while, I will check with your recent reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no recent reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.