You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Karen Robinson and I want to book a flight ticket to attend my aunt's house warming ceremony  on 03/04.

ASSISTANT: Ok, may I know your journey details?

USER: My airport codes are from DC-IAD on 03/03 to PA-PHL on 03/05.

ASSISTANT: Please wait a while. I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for your time. There is Hawaiian airline with flight number 1019 and price of 100 matching your request.

USER: You can proceed with this airline.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us and have a great day.