You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I want to book the flight ticket from EWR to DTW. Can you please help me?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are Dec 13 and Dec 15.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any other requirements?

USER: I don't have any other requirements.

ASSISTANT: May I know your name?

USER: My name is Jessica Anderson.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.