You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Rachel Rodriguez. I am planning to attend music concert at MSP, can you please help me with booking a flight ticket from LAS?

ASSISTANT: Sure. On what dates will you be travelling?

USER: Sure, I would like to take off on Feb 9 and return on Feb 11.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: How much fare are you expecting?

USER: Make sure that the price limit does not exceed 500.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: We found a Spirit airline, flight number and the price is 100.

USER: Yes, please proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.