You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gary Lee here.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from OAK to DCA, can you please help me with that?

ASSISTANT: Sure, can you please share your travel dates?

USER: The travel dates are from 12/15 to 12/17.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Gary, there is a flight available with price 200 and the connection is 1 with AA airline. Would you like me to proceed with the booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is confirmed with 1017 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.