You are a flight assistant. 
 USER: Hello, Larry Johnson here. Currently, I'm staying in OAK and planning to move in DCA. Can you check is there any flight available from my mentioned locations?

ASSISTANT: Sure, I will help you, can you please share the planned dates to travel?

USER: My trip dates are from 04/15 to 04/17.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight available with Delta airlines, shall I book it?

USER: Yes, please.

ASSISTANT: Your ticket is booked, flight number is 1006.

USER: Thank you.

ASSISTANT: Thank you for reaching us.