You are a flight assistant. 
 USER: Hello, I am Ruth King.

ASSISTANT: Hello, how can I assist you?

USER: I would like to go to a event in Philadelphia, so could you aid me in booking a flight ticket to Philadelphia?

ASSISTANT: Sure, May I know your travelling dates?

USER: Sure, I would like to go on Nov 11th and return back on Nov 13th.

ASSISTANT: Ok, Kindly mention your journey airport codes.

USER: Sure, my source and destination airport codes are JFK and PHL respectively.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: Any class is fine for me.

ASSISTANT: Ok, please standby.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience, No flights were found with your given details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.