You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Benjamin Harris. I am looking for a flight from DEN to MSP, can you help me?

ASSISTANT: Sure, please provide your journey dates.

USER: My travelling dates are 27 and 29 of Nov.

ASSISTANT: Do you have any airline preferences?

USER: My airline preference is normal cost.

ASSISTANT: Ok, UA airlines providing the flight-1021 with single connection and the flight fare is 100. Can I proceed?

USER: Proceed to booking.

ASSISTANT: Your booking is confirmed.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.