Hello.
user
Hello. How may I help you out?
assistant
Myself Ruth Martinez. I need to change my existing reservation, can you help me?
user
Sure, I will help you in changing the ticket.
assistant
I will be waiting for your response.
user
Sorry, there are no reservations found in our database.
assistant
That's not an issue, Thank you for helping me.
user
Thank you for choosing us.
assistant