You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please book my flight ticket from IAH to LAS?

ASSISTANT: Sure. What date would you like me to book this plane ticket for?

USER: 11/23 and 11/25 are my trip dates.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, we have Delta airlines which flies to Las Vegas on your journey date.

USER: Ok, you can proceed.

ASSISTANT: Sure. Your flight ticket is confirmed with flight number 1006.

USER: Sandra Harris is my name, please book my ticket with that name. Thank you for your help.

ASSISTANT: Thanks for choosing our airlines.