You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: James Young here. I want to attend a live concert in MSP, could you please help me with booking a flight ticket? My source is PHL.

ASSISTANT: Sure, can I know your dates of journey please?

USER: My travel dates are 07/18 to 07/21.

ASSISTANT: Sorry Young, I did not find any flight basing on your details.

USER: That's fine, thanks for your help.

ASSISTANT: You are welcome.