You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Paul Green here, I want to reserve my ticket from DCA to SEA, can you please help me to book a ticket?

ASSISTANT: Sure, I am here to help you. Could you please let me know your travelling dates?

USER: Ok, my dates of journey is from 09/16 to 09/18.

ASSISTANT: Do you have any requirements?

USER: Yes, please make sure that the price limit is 200.

ASSISTANT: There is a connecting flight-1013 with price 200 is available for you, shall I proceed?

USER: Ok, you can book it.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.