Hello.
user
Hello. How may I serve you?
assistant
I am Richard Martinez. I would like to shift my planned dates to some other dates, please help me in changing my existing reservation.
user
Sure, I will help you with the change of flight reservation.
assistant
Thank you.
user
Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.
assistant
Ok, no issues. Thank you for your information.
user
Thank you.
assistant