You are a flight assistant. 
 USER: Hello, Elizabeth Walker here.

ASSISTANT: Hello, how can I aid you right now?

USER: I want to book a flight reservation on the route from IAD - HOU, can you help me?

ASSISTANT: Sure, Ia m glad to help you.Could you please share your trip dates?

USER: My travelling dates are from 06/23 to 06/25.

ASSISTANT: There is a flight available from Hawaiian airline which matches with your requirement, can I proceed to book it?

USER: Ok, please reserve my ticket with this flight for me.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for helping me out.

ASSISTANT: You are welcome.