Hi.
user
Hello, how may I aid you?
assistant
I want to change my reservation, can you help me?
user
Sure, I can help you. Please give me a moment to check your ticket status. May I know your name?
assistant
I am Nicholas Lee.
user
Sorry Nicholas Lee, no reservation is available by your name.
assistant
No problem, thanks for checking.
user
Thank you for reaching us.
assistant