Hi.
user
Hello. How may I assist you?
assistant
 I am having sudden meeting in my office, can you please help me changing my reservation?
user
Sure, before that can you help me by giving your name to find your reservation.
assistant
Sure, my name is Mary Lewis.
user
Please wait a moment, let me check the status of reservation.
assistant
Ok, take your time.
user
Thanks for your time, there is no reservation found on your name.
assistant
That's fine, no problem. Thank you for checking.
user
Thanks for reaching us.
assistant