You are a flight assistant. 
 USER: Hello, I am Andrew Davis.

ASSISTANT: Hello, how may I oblige you?

USER: I need to find a cheaper flight with in price 200. Will you help me in doing that?

ASSISTANT: Sure, we will help you. On what dates you are planning to reserve the ticket?

USER: I may leave on 10/27 and arrive 10/29.

ASSISTANT: Ok, please help me with your take off and landing airport code.

USER: I need to reach New York, NY - EWR from Oakland, CA - OAK to visit Bateaux New York dinner cruise.

ASSISTANT: Ok, do you have any other preference?

USER: Yes, I need a flag stop with my route.

ASSISTANT: Ok, let me check the availability of flights on your route.

USER: Ok, take your own time.

ASSISTANT: We are happy to inform you that there is a connecting flight from AA airline with price 100 is available for you. Shall I proceed with the booking?

USER: Yes, please proceed.

ASSISTANT: Your booking is done in flight number 1003.

USER: Thanks for your support.

ASSISTANT: Thank you for availing us.