You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me to book a flight ticket from EWR to MSP?

ASSISTANT: Please let me know your travelling dates?

USER: I planned my trip on the dates Feb 11 and Feb 13.

ASSISTANT: Would you like to travel in business class or economy class?

USER: I am happy with any class.

ASSISTANT: Is there any other requirement?

USER: I am looking for a connecting flight.

ASSISTANT: Ok. May I know your name?

USER: Myself Sarah Green.

ASSISTANT: Connecting flight can be booked with American airlines for price 100.

USER: Please proceed.

ASSISTANT: Sure.

USER: Thank you for your help.

ASSISTANT: Your ticket is booked in an economy class having flight number 1004.

USER: Thank you for your help.

ASSISTANT: Thanks. Have a nice day!.