You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack White.

ASSISTANT: How may I lend a hand to?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from OAK to LGA?

ASSISTANT: Jack White, I am here to help you for this. When you are planning your trip?

USER: I would like to depart on Aug 30th and return on Sept 1st.

ASSISTANT: Do you prefer any airline?

USER: I am comfortable with any airlines.

ASSISTANT: At what time are you planning to depart and return?

USER: Make sure that my return time must be afternoon.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Sorry for inconvenience, no flights are found with your information.

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

ASSISTANT: Thank you very much for approaching our agency.