You are a flight assistant. 
 USER: Hello, Eric Roberts here.

ASSISTANT: Hello, how can I be your helping hand?

USER: Please book a ticket to Washington, DC - DCA from San Francisco, CA - SFO>.

ASSISTANT: Sure, We are euphoric to help you.

USER: Thank you.

ASSISTANT:  When did you schedule to travel?

USER: I scheduled to travel on the dates 08/26 & 08/28.

ASSISTANT: Is there any restrictions in ticket fair?

USER: I need a flight within 1000.

ASSISTANT: There is a flight with price of 100 and it has couple of connections. Shall I proceed?

USER: I am looking for a connecting flight. So, please do not proceed.

ASSISTANT: Ok. Thanks for your approach.

USER: Thanks for your kind information.