You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Benjamin Thompson. Could you help me in booking a ticket?

ASSISTANT: Sure Thompson, can I know your travel dates?

USER: It's from LAX to PHX. And the dates of travel are 08/28 to 08/31.

ASSISTANT: Give me a minute, let me check the details. Sorry, there is no flight with your requirements.

USER: Thank you.

ASSISTANT: Thank you.