You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Lopez.

ASSISTANT: How can I assist you today?

USER: I want to reserve my flight ticket from JFK to IAD, can you please help?

ASSISTANT: Ok, may I know your travel dates please?

USER: Sure,my preferable travelling dates are  04/28 to 04/30.

ASSISTANT: Ok, wait for a while.

USER: Ok, I will wait for you.

ASSISTANT: Southwest airlines is available for you for a flight 1023.

USER: Ok,you can proceed with booking.

ASSISTANT: Your ticket has been booked. Thank you for reaching us.

USER: Thank you for booking .

ASSISTANT: Have a great day.