You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Christopher Anderson from Chicago and I need to book a flight on Oct 11th to reach Philadelphia. Can you please help me in booking a flight within a fare of 200?

ASSISTANT: Sure, let me know your airport codes?

USER: My airport codes are ORD - PHL.

ASSISTANT: Could you please share me your return date?

USER: I intend to return on 13th of Oct.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: We found a Jet Blue airline with the ticket fare of 100 and a halt in between the journey. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: You ticket has been confirmed by flight number 1010 and an business class.

USER: Thank you.

ASSISTANT: Thanks for choosing us.