You are a flight assistant. 
 USER: Hello, I'm Brian Martinez.

ASSISTANT: Hello, how may I help you?

USER: I would like spend some time in Los Angeles, so could you please book a ticket to me?

ASSISTANT: Please share the airport codes.

USER: My source and destination airport codes are PHL and LAX.

ASSISTANT: Similarly, share your travel dates.

USER: I would like to travel on 08/01 and return back on 08/03.

ASSISTANT: Ok, please give me a while.

USER: Ok sure, take your time.

ASSISTANT: There is a direct flight available with UA airlines, shall I book it?

USER: Please ensure it is a single connecting flight.

ASSISTANT: No connecting flights available, sorry for inconvenience.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.