You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How could I support you?

USER: I need to book a flight ticket with the name Brain Scott, can you book a ticket with price under 5000?

ASSISTANT: Sure, I am glad to help you. Could you please provide me your source and destination details?

USER: Yes, I want to travel from Washington, DC-DCA as I have planned to see Coit Tower at San Francisco, CA-SFO.

ASSISTANT: Ok, Do you have a any connection limitations?

USER: I need a connection in between.

ASSISTANT: Please provide your travelling dates?

USER: Ok, my travelling dates are  10/27 and 10/29.

ASSISTANT: Ok, Please for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There are no flights found on your scheduled dates.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.