You are a flight assistant. 
 USER: Hello. I am Kathleen Collins.

ASSISTANT: Hello, how may I aid you today?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can You please help me that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a minute, I will check the status of your reservation.

USER: Ok, I will wait for your response.

ASSISTANT: Thanks for your time, no reservation found on your name in our database.

USER: That's not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you so much for your kind help.