You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Williams.

ASSISTANT: How can I assist you?

USER: I have to attend a Live Concert at Atlanta, could you please help me with booking a flight ticket from PHL to ATL?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: I would like to take off on 10/14 and return on 10/16.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: There are no flights available at this moment.

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 contacting us.