You are a flight assistant. 
 USER: Hello, I am Frank Jackson.

ASSISTANT: Hello, How can I help you?

USER: I want to attend my brother birthday with my friends in New York, can you help me with single connection of flight?

ASSISTANT: Sure, Please help me with your journey codes.

USER: My origin is PHL and destination is EWR.

ASSISTANT: May I know the trip dates?

USER: My depart is on 11/19 and return on 11/21.

ASSISTANT: Please give a second.

USER: OK.

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

USER: No problem, I will try with another airline.

ASSISTANT: Thank you for opting us.

USER: Thank you for the help.