You are a flight assistant. 
 USER: Hello, I am Dorothy Lopez.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a beach in Philadelphia, so could you please book a ticket for me?

ASSISTANT: Please send your journey dates.

USER: I would like to go on 08/15 and return back on 08/17.

ASSISTANT: Can I have your route plan?

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

ASSISTANT: Please wait for an moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry, connecting flights are not available.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.