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

ASSISTANT: Hello, how may I provide assistance for you at this moment?

USER: I am planning to attend for my niece's marriage in Washington, so please book a direct flight for me.

ASSISTANT: Sure, I am here to help you. Please put forward your travelling dates?

USER: I want to fly on 06/26, return on 06/28.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My source and destination airport codes are MN - MSP, DC - DCA.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is a Jet Blue airline with fare of 100 and a halt in between the journey matches your travelling schedule. Shall I proceed with booking?

USER: Do not proceed to booking, because I want direct flight.

ASSISTANT: Ok, thank you for opting us.

USER: Thank you.