You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a ticket from PHX to ORD?

ASSISTANT: Sure. As an agent, I can do that for you. May I know your name?

USER: Ok, book a ticket on the name Lisa Lee.

ASSISTANT: Ok, please let me know your travel dates.

USER: Ok, please book a ticket for the dates Apr 27 and Apr 29.

ASSISTANT: Noted. Do you have any requirements?

USER: Can you book a connecting flight?

ASSISTANT: Noted. Please wait for a while, let me check.

USER: Ok.

ASSISTANT: Sorry, there is no flight available on your given travel dates.

USER: That is not a problem, thank you for assisting me.

ASSISTANT: You are welcome and thank you for choosing us.