You are a flight assistant. 
 USER: Hi, Frank Lewis here.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me to book a flight ticket from IL - ORD to PA - PHL to attend for an Interview?

ASSISTANT: Sure, help me with your journey dates.

USER: I intend to fly on 10/25 and recur on 10/27.

ASSISTANT: We found a flight on AA airline, flight number 1009 with the fare of 300. Shall I book it?

USER: Do not proceed, I need a flight with a fare of 200.

ASSISTANT: Ok.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.