You are a flight assistant. 
 USER: Hi, Linda Parker here.

ASSISTANT: Hello, how may I address you today?

USER: I want to attend my aunt's 25th anniversary at New York, NY - EWR. Can you please book a ticket on 12/17?

ASSISTANT: Sure, please mention your source airport code?

USER: My origin is Dallas & Fort Worth, TX - DFW.

ASSISTANT: When would you like to return?

USER: I need to return on 12/19.

ASSISTANT: Do you have any other specifications?

USER: I need a flag stop. Price of ticket should not exceed 500.

ASSISTANT: We found a connecting flight with fare of 100 in Hawaiian airline. Shall I proceed for booking?

USER: Please confirm it.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your assistance.

ASSISTANT: Thanks for opting us.