You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: My name is Karen Hernandez.

ASSISTANT: Ok.

USER: I want to book a flight ticket from TX - DFW to TX - IAH. Please help me in booking a flight ticket.

ASSISTANT: Sure, can I know your preferable dates?

USER: My travel dates are from 05/28 to 05/30.

ASSISTANT: I found a flight 1002 of Spirit airlines matches with your preferences, can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a good day.