You are a flight assistant. 
 USER: Hello,. I am Melissa Hill.

ASSISTANT: Hello, what kind of service your are excepting for me?

USER: On 01/16 I want to book a flight ticket to Philadelphia, PHL. Can you reserve my ticket from Seattle, SEA?

ASSISTANT: Sure, I can make your reservation right now. When do you planned your return date?

USER: I will come back on 01/18.

ASSISTANT: Do you need any halt in between your journey?

USER: Sure, I need a halt in my travel.

ASSISTANT: Is there any price limit for you?

USER: 500 is the price limit.

ASSISTANT: We are glad to inform you that there is a flight found with UA airline of flight number 1020 and fare is 100. Shall I proceed for booking?

USER: Yes proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for quick service.

ASSISTANT: Thanks for connecting us and have a great journey.