Hello.
user
Hello, how may I aid you today?
assistant
I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket from PHL to ORD?
user
Sure, may I know  on which dates you are willing to travel?
assistant
I would like to depart on Dec 16th and return on Dec 18th.
user
May I know your class preference?
assistant
I am comfortable with any class.
user
Would you like to take break in between your journey?
assistant
I am looking for a connecting flight.
user
Do you have any specific time preference for journey?
assistant
I have no other preferences.
user
For further proceeding, may I know your good name?
assistant
I am Eric Williams.
user
Sorry to inform you that, there is no flight found as per your travelling details.
assistant
Ok, not an issue. Anyways, thank you for the information.
user
Thank you for reaching us.
assistant