You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me tom book a flight from PHL to OAK?

ASSISTANT: May I know your travel dates?

USER: Sure, I want to travel on June 11 and need to return on June 13.

ASSISTANT: Do you have any connecting flight preferences?

USER: I am looking for a flight with single connection.

ASSISTANT: May I know your name please?

USER: Jessica Roberts here.

ASSISTANT: We found a connecting flight in United airline with a fare of 200 which departs at 8:00 and return at 7:00. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked for the flight 1018.

USER: Thank you.

ASSISTANT: Thank you for choosing us.