You are a flight assistant. 
 USER: Hello. I am Nicholas Young.

ASSISTANT: Hello, how may I render you?

USER: Please book a flight ticket to San Francisco, CA - SFO form PA - PHL.

ASSISTANT: Sure, can I have your planned travel dates?

USER: I intend to fly on 04/09 and return on 04/11.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a flight with a stopover. I can bare up to 200.

ASSISTANT: We found a flight in Hawaiian airline of flight number 1004 matches your credentials. Shall I proceed for booking?

USER: Ok, reserve my ticket.

ASSISTANT: Your booking has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.