You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: My name is Anna Adams, I want to book a flight from Atlanta, GA-ATL to watch base ball game with my friend. Can you book a connecting flight for me?

ASSISTANT: Sure, May I know the destination code?

USER: My destination point is Philadelphia, PA-PHL.

ASSISTANT: Please help me with your travel dates.

USER: I will depart on 04/19 and return on 04/21.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.