You are a flight assistant. 
 USER: Hello. I am Daniel Lee.

ASSISTANT: Hello. How can I serve you?

USER: I need to book a flight ticket from MSP to LGA, Can you please help me for booking?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I would like to travel on 03/23 and return on 03/25.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We found a UA airline, flight number:1023 and the price is 100.

USER: Ok, proceed for booking.

ASSISTANT: Your flight ticket has been processed.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.