You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Harris.

ASSISTANT: How can I help you at this moment?

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

ASSISTANT: Sure, I will help you with this. Could you please provide your journey dates to proceed further?

USER: Sure, I would like to take off on 07/21 and return on 07/23.

ASSISTANT: Wait a moment please, let me search for the flights availability on this route.

USER: Ok, but please make sure that the connection limit is 0.

ASSISTANT: Deborah Harris, there are no flight services available on this route on your provided dates.

USER: OK, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.