You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER:  I am Samuel Scott here. I want to reserve my flight ticket from SEA to IAD, Can you please help me?

ASSISTANT: Sure, can I know the travel dates please?

USER: My preferable travelling date of journey from 04/11 to 04/13.

ASSISTANT: There is a flight in Southwest airline with price 200, can I book it?

USER: Its perfect,You can proceed with this booking.

ASSISTANT: Your ticket has been booked with flight number 1015.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.