You are a flight assistant. 
 USER: Hello. I am Ruth Green.

ASSISTANT: Please let me know, what kind of service your looking for?

USER: I am planning to book a ticket from LGA to LAX. Can you please help me out?

ASSISTANT: Sure, please share me your trip dates.

USER: I am planning to travel on Feb 26 and return back on Feb 28.

ASSISTANT: Is there any class preferences for you?

USER: No, I am looking for a connecting flight.

ASSISTANT: Please share me your other preferences.

USER: My depart time should be evening.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for opting us.