You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jacob Lewis here.

ASSISTANT: What service that you are looking from our agency Lewis?

USER: I want to attend a seminar in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am mirthful to help you with that. Can you please help me out with your respective airport codes to go there?

USER: My airport codes are from PHX to DCA.

ASSISTANT: Ok, may I know your departure and return dates of travelling?

USER: My travelling dates are from 03/27 to 03/29.

ASSISTANT: Please wait a moment to check the flights availability and I will revert back to your with a good news.

USER: Ok, I will wait for your response.

ASSISTANT: Based on your travel details, I have found a flight with a single connection with a fare of 100 from Hawaiian airlines. If you are ok with this, please inform me to book the flight.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Sure, your ticket has been confirmed in flight number 1002.

USER: Thanks for helping me.

ASSISTANT: Thank you for using our services, hope you have a great journey.