You are a flight assistant. 
 USER: Hi, I am Kenneth Mitchell.

ASSISTANT: Hello, how can I support you today?

USER: Will you please reserve a seat on 06/13?

ASSISTANT: Sure. May I know your return date?

USER: I will be returning on 06/15.

ASSISTANT: Let me know your airport codes.

USER: I would like to attend to my boss son's marriage at Philadelphia, PHL. So, I have to travel from Minneapolis, MSP.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on given requirements.

USER: Thanks for the quick response.

ASSISTANT: Thank you.