You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me booking a flight ticket from ORD to SFO?

ASSISTANT: I am glad to help you. May I know your planned travel dates?

USER: I will start on 09/13 and return on 09/15.

ASSISTANT: Do you have any connection limit preference?

USER: No, I am comfortable with any flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Do you have any specific time concern?

USER: No.

ASSISTANT: Could you help me with your name please?

USER: I am Amy Allen.

ASSISTANT: Thank you for providing necessary information. United Airlines is providing a connecting flight with flight number 1017. Can I book your ticket?

USER: Proceed with the booking.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us.