You are a flight assistant. 
 USER: Hello, I am Anna Roberts.

ASSISTANT: Hello,. How can I help you?

USER: I would like to fly from Denver to Las Vegas, can you please help me to book a ticket?

ASSISTANT: Sure, we are here to help you. Let me know your airport codes?

USER: My preferable airport codes are from DEN to LAS.

ASSISTANT: May I know your price limit?

USER: Please make sure price limit should not exceed 1000.

ASSISTANT: Please share me your travelling dates?

USER: I would like to leave between 07/16 and 07/18.

ASSISTANT: Please wait a minute, I will check and revert to you.

USER: Ok.

ASSISTANT: We are very glad to inform you that there is a flight found with AA airline of flight 1014. Shall I proceed to booking?

USER: Yes, you can book this.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much for your good response.

ASSISTANT: Thank you.