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

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me in booking a flight ticket to IAD from MSP?

ASSISTANT: Sure, we are here to help you. Can you share me your trip dates?

USER: My trip dates are from Aug 07 to Aug 09.

ASSISTANT: Do you need any halt in your journey?

USER: I am comfortable with any flight.

ASSISTANT: May I know your departure time and arrival time?

USER: There is no specific time for depart and arrival.

ASSISTANT: Sorry to inform you that, there are no flights found with your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.