You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Rebecca Williams. I need to cancel my recent reservation due to postpone of exams. Could you please help me in cancelling the previous reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Rebecca, there is no reservation found under your name.

USER: No issues. Thank you for your valuable information.

ASSISTANT: You are welcome. Thank you for reaching us.