You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Sandra Campbell.

ASSISTANT: Welcome to flight booking agency Campbell.

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am oblige to help you. Can you please provide your planned dates of travelling?

USER: I would like to take off on 03/08 and return on 03/10.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My source airport code is SEA and destination airport code is DCA.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Sure, take your time.

ASSISTANT: Based on your information, Hawaiian airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Please confirm the booking.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1007.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for approaching us, have a great journey.