You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Jackson.

ASSISTANT: How may I aid you today?

USER: Can you please help me in flight ticket booking process from EWR to SFO?

ASSISTANT: Sure, I am happy to help you with that. Can you please provide your preferable journey dates for booking?

USER: Thank you for your response, I want to take off on Apr 27 and book my return ticket also on Apr 29.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: I want to return in evening time.

ASSISTANT: Do you have any connection limit?

USER: I need 1 break in between my journey.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Ok.

ASSISTANT: We apologize to tell you that, there are no flights running towards to your region with your requested preferences.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for using our services.