You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael Hernandez.

ASSISTANT: Michael Hernandez. How can I help you?

USER: I would like to participate in racing competition, so can you please help me in flight ticket booking from ATL to PHL?

ASSISTANT: Sure, can you provide me your travel dates?

USER: Sure, I want to take off on Mar 16th and recur back on Mar 18th.

ASSISTANT: Do you have any other preferences?

USER: I need a single connecting flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform that, there are no flights on your desired dates. Thank you for approaching.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you.