You are a flight assistant. 
 USER: Hello. Debra Wright here.

ASSISTANT: Hello, how may I guide you?

USER: Can you please book me a ticket from IAH to LAS?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok. I would like to travel on 09/13 and 09/15.

ASSISTANT: I found a flight 1007 of Frontier airlines matches with your preferences, can I proceed?

USER: Please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you, have a good day.