Hello.
user
Hello. How can I assist you today?
assistant
I have to change my trip dates, so please help me in changing my ticket.
user
Sure, I will help you with that.
assistant
Thank you.
user
On which name you reserved a ticket earlier?
assistant
My name in the  previous ticket is Michelle Garcia.
user
Ok, please wait a moment.
assistant
Ok.
user
Sorry Garcia, there is no reservation found under your name.
assistant
That's fine, anyway's thank you for searching.
user
My pleasure. Thank you for choosing us.
assistant