Hello.
user
Hello. How may I help you?
assistant
I want to cancel my reservation, because my one of friend is busy with another work, he unable to catch that flight,  so we all are decided to cancel this trip, can you help me?
user
Sure, let me know your name so that I can help you easily.
assistant
Sure, my name is David Clark.
user
Ok, let me check your status of your reservation.
assistant
Ok.
user
Thanks for your patience, there is no reservation under your name David Clark.
assistant
Oh, it's ok no problem. Thank you for your information.
user
Thank you for consulting us.
assistant