Hello. My name is Gary Allen.
user
Hello, how may I help you today? Nice to meet you, Allen.
assistant
Actually, I booked a ticket to DEN for a music concert but in the last minute the dates of the concert are changed. Could you help me in changing the reservation?
user
Ok, please wait for a mean while to check for the availability.
assistant
Sure, take your time.
user
Sorry Allen, there is no reservation found as per your name to change your reservation.
assistant
That's ok. Thank you for your time.
user
Thank you for contacting us.
assistant