You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to attend music concert at OAD, can you please help me with booking a flight ticket from ORD?

ASSISTANT: May I know your journey dates?

USER: I would like to take off on Nov 14 and return on Nov 16.

ASSISTANT: Sure, Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Please recheck your destination airport code and revert me back?

USER: My destination airport code is IAD.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class.

ASSISTANT: Can you help me with your name please?

USER: My name is Larry Taylor.

ASSISTANT: There were no flights found with your specified details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.