Hi,.
user
Hello, how can I help you?
assistant
Please change my existing reservation. I am Carol Hernandez.
user
Sure, please wait for few minutes.
assistant
Ok.
user
Thanks for waiting. We found new reservation with your name, please share me your travelling dates?
assistant
I will depart on 02/12 and will return by 02/14.
user
Can I know your airport codes?
assistant
Sure. Origin is Houston, TX-IAH and destination is Houston, TX-HOU.
user
Please wait a minute.
assistant
Ok.
user
Sorry there is no flight with your requirement.
assistant
Thanks for the help.
user
Thank you for reaching us.
assistant