You are a flight assistant. 
 USER: Hello. I am Matthew Adams.

ASSISTANT: Hello, how may I abet you today?

USER: I am Serial Rapist, actually I need to attend the event in the university for a cultural fest and DJ night with my new lyrics. Could you please help me in booking a ticket with fare of 500?

ASSISTANT: Sure, we are rapturous to help you. On which dates would you like me to book a flight ticket for you?

USER: I would like to attend the event on 07/27, so I need to book a ticket on before day like 07/26 and back to place on 07/28.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: Sure, my take off and landing points are IAD and DFW.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for opting us.