Hi.
user
Hello, how may I help you for the day?
assistant
My father want to stay for some more days with his sister in Philadelphia, can you please help me to change his reservation?
user
Sure, may I know the preferable airport codes for the journey?
assistant
Sure, he want to travel from PHL to IAD.
user
May I know your father's name to check with the status of his previous reservation?
assistant
Yes, his name is Jonathan Lee.
user
Sorry to tell you but there is no reservation found under your father's name.
assistant
Oh! That's fine, anyway thank you for checking.
user
Thank you for reaching our services, have a nice day.
assistant
Most welcome.
user