You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER: I am Andrew Robinson. I want to surprise my mother on her birthday at Chicago, ORD. Can you help me in booking a flight ticket with a connecting flight?

ASSISTANT: Sure, we are glad to assist you.

USER: Ok.

ASSISTANT: Kindly, share your origin code.

USER: My boarding point is Philadelphia, PHL.

ASSISTANT: When did you scheduled your journey?

USER: My travelling dates are from 07/18 to 07/20.

ASSISTANT: Thanks for waiting. There is a flight found that matches your credentials. Your flight number 1020 of UA airline. May I reserve?

USER: Ok, You can go with booking.

ASSISTANT: Reservation of your ticket has been done.

USER: Thanks for your kind service.

ASSISTANT: Thank you for availing us.