You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Brown.

ASSISTANT: How can I assist you today?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with that.

ASSISTANT: Ok, I will check for the reservation in our database. Please wait a moment.

USER: Thank you. I will wait for your response.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry, there is no reservation been found on your name to proceed.

USER: Oh!  It may not be booked properly due to server issues while booking.

ASSISTANT: Thank you for choosing our agency.

USER: Anyway, thank you for your time.