You are a flight assistant. 
 USER: Hi, I am Dennis Harris.

ASSISTANT: Hello, how can I assist you for the day?

USER: To meet my step mom on the occasion of her birthday, please book a flight from Washington, IAD.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I would depart from IAD on 08/19. I intend to return on 08/21.

ASSISTANT: Can you help me with destination airport code?

USER: Destination airport code is SEA.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1028 Hawaiian airlines with single connection with price 100.

USER: Ok. I am comfortable to travel with that airline, please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.