Hello.
user
Hello. How can I help you today?
assistant
I am Debra Perez, want to change my travelling dates. Can you help me in altering my reservation?
user
Sure, please wait for a moment.
assistant
Sure, take your time.
user
Sorry Debra, no reservation found by your name in our database.
assistant
That's fine, thank you for your time.
user
My pleasure, have a nice day.
assistant