You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Parker.

ASSISTANT: How can I aid you at this moment?

USER: I have to attend a Music Concert at Phoenix, could you please help me with booking a flight ticket from IAH to PHX?

ASSISTANT: Sure, I am gleeful to help you in booking the flight ticket.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: I would like to take off on 11/13 and return on 11/15.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Sorry Parker, there is no flight available for your desired intents.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.