Hello.
user
Hello. How can I help you?
assistant
Owing to an emergency, I just want to change my existing reservation. Can you please help me?
user
Sure, I will help you to change your reservation.
assistant
Thank you.
user
Please mention your name.
assistant
Sure, my name is Emma Adams.
user
Sorry, no reservation found on your name to change your reservation.
assistant
Ok, thank you.
user
Welcome, have a nice day.
assistant