You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Kevin Phillips.

ASSISTANT: How may I serve you today?

USER: I want to book flight ticket from Houston, TX - HOU to Las Vegas, NV - LAS. Can you help me in this?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: My travel dates are 12/11 - 12/13.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: JetBlue airline with flight number 1000 is going on your way and the fare is 100. Is that okay?

USER: It is perfect for me. You can reserve it.

ASSISTANT: Your booking has been done.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.