You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Michelle Lewis here. I want to book a ticket from CLT to DFW. Could you help me with booking?

ASSISTANT: Sure, when would you like to depart and return?

USER: My travelling dates are from 03/28 to 03/30.

ASSISTANT: Ok, which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Ok, we found a JetBlue airline, flight number: 1005, price: 200 with one connection.

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been confirmed with economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.