You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Gregory Miller. I have to go Washington for attending a birthday party there, can you please book a flight ticket from DCA to DCA?

ASSISTANT: On which dates you want to travel?

USER: Birthday party on 04/27 so I would like to departure on 04/26 and please book my return ticket also on 04/28.

ASSISTANT: I have found a flight, airline is Hawaiian and flight number is 1003. Shall I proceed?

USER: That's perfect, please proceed.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.