You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to book a flight ticket from OAK to LGA?

ASSISTANT: Sure, may I know the planned travel dates to check for the flight availability?

USER: Sure, my planned travel dates are Apr 14 and Apr 16.

ASSISTANT: May I know the connection limit for this journey?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to depart during afternoon and return time should be evening.

ASSISTANT: Ok, do you have any other specifications to be met?

USER: No.

ASSISTANT: Please provide me the name.

USER: Myself Emily White.

ASSISTANT: Sorry to say, there are no flights are available for your desired intent.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for reaching us.