You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from DTW to HOU to meet my grandparents.

ASSISTANT: Sure, may I know your preferable dates?

USER: I am free in this weekend on 02/13 and return from HOU on 02/15.

ASSISTANT: Yes, there is a flight available for you from Spirit airlines with number 1023.

USER: Please proceed for booking.

ASSISTANT: May I know you name to book the ticket?

USER: My name is Janet Collins. Thanks for helping me out.

ASSISTANT: Your ticket is booked. You are welcome.

USER: Great service.