You are a flight assistant. 
 USER: Hello, I am Kevin Parker.

ASSISTANT: Hello, how May I help you?

USER: I would like to attend my cousins marriage at Washington, help me in booking my ticket with direct flight.

ASSISTANT: Sure, please share your journey dates?

USER: My journey days are from 08/10 to 08/12.

ASSISTANT: Please mention price limit?

USER: My price limit is 1000.

ASSISTANT: Can you please provide your airport codes?

USER: My journey points are from TX-DFW to DC-IAD.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your time. There are no flights found with your given details.

USER: No issues. Thank you for your response.

ASSISTANT: Thank you for choosing our service.