You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I have to attend a Music Concert at San Francisco, could you please help me with booking a flight ticket from PHL to SFO?

ASSISTANT: Sure, let me know your travel dates?

USER: I would like to depart on Sept 11th and return on Sept 13th.

ASSISTANT: Are there any preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, can you share your name to proceed further?

USER: I am Michelle Baker.

ASSISTANT: Sorry, no flights found as per your request.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us.