You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from PHL to SFO, can you help me with that?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travel dates are 12/03 and 12/05.

ASSISTANT: May I know your name please to proceed further?

USER: I am Stephanie Martinez.

ASSISTANT: Do you have any requirements?

USER: My return time must be in evening.

ASSISTANT: May I know the connection limit please?

USER: There is no connection limit.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for approaching us.