You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My friend has thrown a party at his place in Denver, I want to book a ticket. Please help me out.

ASSISTANT: Sure, can you help me with your travelling airport codes?

USER: Ok, my travelling airport codes are from MSP to DEN.

ASSISTANT: Sure, can you help me with your planned dates?

USER: My travel dates are from 06/16 to 06/18.

ASSISTANT: May I know your name?

USER: My name is Gary Wright.

ASSISTANT: I have found a flight-1003 of Spirit airlines, shall I proceed?

USER: Ok, please proceed my booking.

ASSISTANT: Your ticket has been booked, have a nice journey.

USER: Thank you for your help.

ASSISTANT: You are welcome.