You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Dennis Campbell.

ASSISTANT: How may I help you?

USER: I would like to celebrate New Year with my friends at Detroit. Can you help me in booking a ticket?

ASSISTANT: Sure, may I know your airport codes please?

USER: The airport codes are MSP and DTW respectively.

ASSISTANT: Please help me with your journey dates?

USER: I am planning my journey on dates 01/01 and 01/03.

ASSISTANT: There is a flight for you in Frontier airlines with price 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is done with flight number 1013.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.