You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. 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 cancelling my reservation.

ASSISTANT: Ok, sure. Can you please let me know your name for searching your recent reservation?

USER: Sure, myself Susan Thomas.

ASSISTANT: Ok, please wait for a while I will check your reservation in my database.

USER: Sure, take your time.

ASSISTANT: Sorry, I did not find your reservation in my database to cancel.

USER: Oh! It may not be booked properly while booking. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching our agency.

USER: Most welcome.