You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Please tell me, how may I help you?

USER: Myself Brandon Lee. I want to travel EWR for a business meeting purpose, can you please book a flight ticket form PHL?

ASSISTANT: Sure, on which dates you are planned to fly?

USER: My departure date is 08/29 and please book my return ticket also on 08/31.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, there is no flight is available for you. Thank you for reaching us, have a nice day.

USER: It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Welcome.