You are a flight assistant. 
 USER: Hello. I am Joseph Jones.

ASSISTANT: Hello, how may I assist you today?

USER: My brother's son will be baptized on 01/04, so I need to attend the ceremony in Chicago. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your return date?

USER: I need to go on 01/03 and intend to back on 01/05.

ASSISTANT: Can I know where do you want to board and land?

USER: Yes, I would like to board from PHL and land at ORD.

ASSISTANT: Thanks for providing details. We found a flight on Jetblue airline, flight number as 1017 with the fare of 300.

USER: Actually I am looking for a cheaper flight within price 200, so please don't proceed with this flight. Thank you.

ASSISTANT: Ok. Thank you.