Hello.
user
Hello. How may I help you?
assistant
I'm Joseph Lee. Mistakenly I had booked a flight ticket with a price of 1000, could you please help me in changing my existing reservation?
user
Ok, let me check with your details.
assistant
Ok.
user
Joseph, there is no reservation found under your name.
assistant
Ok, thank you for your help.
user
Can I help you with anything else?
assistant
No, I don't want any other help.
user
Thank you for choosing us.
assistant