Hello.
user
Hello, how can I serve you today?
assistant
 Due to sudden health issue, I am not able to travel in a flight on those date that I want to travel. So, I would like to change my reservation. Can you please help me out with that?
user
Sure, I will help you.
assistant
Ok.
user
May I know your good name?
assistant
Myself Laura Johnson.
user
Please wait for a while, I will check in the reservation list and get back to you.
assistant
Ok, I will be waiting.
user
Thanks for being patient, there is no active reservation found on your name to change.
assistant
That's ok, thank you for the information.
user
Thank you for choosing us.
assistant