You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am David Anderson.

ASSISTANT: How can I provide assistance for you?

USER: I want to book a flight ticket to visit the White House in Washington DC - DCA, so please help me in booking a flight ticket from CA - LAX.

ASSISTANT: Sure, we are rapturous to help you. Do you have any restriction on price?

USER: I can afford up to 1000.

ASSISTANT: What are your planned journey dates?

USER: I want to fly on 07/07 and return on 07/09.

ASSISTANT: Thanks for the details, please wait a minute.

USER: Sure, I need a direct flight.

ASSISTANT: Thanks for your time, we found a Frontier airline flight with single connection and fare 100.

USER: Don't proceed for booking.

ASSISTANT: Shall I proceed? Ok, I am not processing your booking.

USER: Thank you.

ASSISTANT: Thank you for reaching us.