You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you at present?

USER: As I am a Singer, I have a Musical Concert to attend, so please help me to book a flight at Washington.

ASSISTANT: Sure, Can you please share your travelling airport codes?

USER: Sure, my airport codes are MSP - DCA.

ASSISTANT: May I know your planned journey dates?

USER: My planned dates are on Jan 12th to 14th.

ASSISTANT: Is there any class preference?

USER: I usually prefer a business class to go.

ASSISTANT: Do you prefer to travel in a connected flight or a direct flight?

USER: I wish to travel in a direct flight.

ASSISTANT: Let me know your name please.

USER: Sure, my name is John Walker.

ASSISTANT: Please wait for sometime.

USER: Sure.

ASSISTANT: Sorry to notify you that, we did not find any flights to reach your destination.

USER: No worries, thank you.

ASSISTANT: Thank you for approaching us.