You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I am Donna Jones, I want to book a ticket to Houston, HOU from Las Vegas, LAS. Could you help me?

ASSISTANT: Sure, may I know your travel dates?

USER: My depart date is on 03/19 and return date is on 03/21.

ASSISTANT: How much you can afford for the ticket?

USER: I can afford up to 1000.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting. No flights found on your name.

USER: Ok, thanks for notifying me.

ASSISTANT: Thank you for reaching us.