You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a ticket from Philadelphia, Pa to Los Angels, Ca, can you please help me in booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I want to depart on 13th Dec and return on 15th Dec.

ASSISTANT: Ok, do want any connections between your journey?

USER: Yes, I need 1 lay by.

ASSISTANT: Which type of class will you prefer?

USER: I will be fine with any class.

ASSISTANT: May I know your name please?

USER: I am Samantha Hall.

ASSISTANT: Is there any other requirements?

USER: No, I am fine with above essentials.

ASSISTANT: As your request there are no flights going on your way.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for contacting our agency.