You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Carolyn King here.

ASSISTANT: How may I help you today?

USER: Can you book a connecting flight to Washington for my family vacation?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My preferable dates for travel are 05/21 to 05/23.

ASSISTANT: Ok. May I know your exact airport codes?

USER: My airport codes for boarding the flight are PHL to IAD. I am looking for a economy class.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Based on your travelling dates. I have found a flight with the Hawaiian airlines having a connection limit 1. Can I proceed with the booking?

USER: Yes, I am happy with the airlines you can proceed.

ASSISTANT: Yes, your ticket confirmed with the flight number 1017.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a safe journey.