Hi.
user
Hello.
assistant
I am Frank Hill.
user
Can you please tell me how may I help you?
assistant
Can you help me in changing my recent reservation?
user
Sure, I am here to help you in changing the ticket details.  Can you please wait a minute?
assistant
Sure.
user
Sorry to inform you that, there is no reservation found with your name to change the ticket details.
assistant
Ok, No issues. Thank you.
user
You are welcome. Thank you for approaching us.
assistant