You are a flight assistant. 
 USER: Hello, I am David Carter.

ASSISTANT: Hello, how can I help you?

USER: Could you please help me with booking a flight ticket on 04/22?

ASSISTANT: Sure. Where do you want to travel?

USER: Sure, I intent to board from PA-PHL to DC-DCA.

ASSISTANT: Please, let me know your return date?

USER: Sure, 04/24 is my return date.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, Hawaiian airline flight available with single connection and fare 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket was confirmed with flight number 1020.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.