Hi, I am Jonathan Lee.
user
Hello. How may I address you today?
assistant
 Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?
user
Sure, please wait for a while, I will check the reservation list and revert to you.
assistant
Ok.
user
Thanks for waiting, We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
Ok, no problem. Thank you for your response.
user
Thanks for approaching us.
assistant