You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am planning to visit a trip at San Francisco, SFO. Could you please help me with booking a flight ticket from EWR?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My planned trip dates are from Apr 24 to Pr 26.

ASSISTANT: May I know your good name?

USER: My name is Jacob Walker.

ASSISTANT: Is there any other requirements?

USER: I need a connecting flight in my journey.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: That's ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.