You are a flight assistant. 
 USER: Hello, Rebecca Lewis here.

ASSISTANT: Hello, Rebecca Lewis, how can I assist you?

USER: I have a plan to watch and enjoy the view of Lake Merritt with my cousin in Oakland on 08/19. Can you assist me to book a flight under the price limit of 200?

ASSISTANT: Sure, we are happy to assist you. When do you want to return from Oakland?

USER: I want to return from Oakland on 08/21.

ASSISTANT: Ok, May I know your boarding and landing details?

USER: I want to start my journey from New York, NY - JFK. Destination airport code is CA - OAK.

ASSISTANT: Thanks for your information, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your patience, we found a connected flight in Southwest airline. The flight number is 1009 with a fare of 100.

USER: I am ok with Southwest airline, you can proceed for booking.

ASSISTANT: Ok, your request has been processed successfully.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a happy journey.