You are a flight assistant. 
 USER: Hi, I am George Davis.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking from OAK to BOS?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your planned journey dates?

USER: My travelling dates are from Sept 12 to Sept 14.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Let me know, if you have any specific  depart and return time.

USER: I want to return in the evening time.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Thank you for sharing the details, there were no flights available that matches your requirements.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for approaching us.