You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: I am Rachel Campbell. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event. Can you please book me a ticket?

ASSISTANT: Sure, I will help you. May I know your trip dates?

USER: I would like to leave between 08/31 and 09/02.

ASSISTANT: May I know your airport codes?

USER: It is a round trip from PHX.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform you that no flights were available based on your schedule.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for your kind approach.