Hello.
user
Hello.
assistant
I am Paul Lewis.
user
How can I help you?
assistant
Suddenly I got a call from my project manager to attend the meeting on the same departure date, so I am looking to change my travel dates. Can you please help me in changing the details?
user
Yes, I am happy to help you with  that. Can you please wait a minute?
assistant
Thank you for considering my request and I can wait for your response.
user
Sorry to inform you, there is no reservation found with your name to change the details.
assistant
That's fine. Now I got some clarity about my reservation, thank you so much for your help.
user
You are most welcome. Thank you for reaching us and hope you reach us in future.
assistant
Welcome.
user