You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you?

USER: I want to meet my Granny's sister at Philadelphia. Can you please help me in my booking process?

ASSISTANT: Sure, we are here to help you. May I know your good name?

USER: Jennifer Lee.

ASSISTANT: Jennifer Lee, Can you provide your airport codes?

USER: Sure, Source is from IAD and Destination is to PHL.

ASSISTANT: May I know your preferable dates?

USER: My preferred dates are 12/27 to 12/29.

ASSISTANT: No flights found with your name.

USER: I need a single connection having price limit below 500.

ASSISTANT: Thank you, have great day.