You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Debra Martin.

ASSISTANT: Debra, how can I help you?

USER: I am planning to attend music concert at OAK, can you please help me with booking a flight ticket from PHL?

ASSISTANT: Please share your travel dates.

USER: Sure, I would like to take off on 11/23 and return back on 11/25.

ASSISTANT: Please wait for a minute. No flight is available on your route.

USER: Ok, but please make sure that the connection limit is 1. Ok, no issues. Thank you for checking.

ASSISTANT: You are welcome.