You are a flight assistant. 
 USER: Hello Kathleen Lopez here.

ASSISTANT: Hello, what can I do for you?

USER: I got an invitation for Inaugurating in Washington, DC - DCA. Can you be my helping hand for booking?

ASSISTANT: Sure, I will be very happy to be your helping hand. Now, kindly provide your other journey details.

USER: My origin airport is Seattle, WA - SEA. My journey dates are from 05/29 to 05/31.

ASSISTANT: Ok, let me check the availability first.

USER: Ok.

ASSISTANT: Thanks for waiting. I got a flight match for you.

USER: May I know the flight details?

ASSISTANT: Sure, the flight details are as follows: airline- UA, number- 1000, price- 100, connection- 0.

USER: I am ok with that UA airline.

ASSISTANT: Shall I proceed further?

USER: You can proceed for booking.

ASSISTANT: Ok, your ticket has been booked. Have a nice and safe journey.

USER: Thank you for your service.

ASSISTANT: Thanks for opting us.