You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: Can you find a flight for me from SFO to LAS?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: Ok, my trip dates are from Aug 03 to 05.

ASSISTANT: May I know your name for further process?

USER: Sure, I am Angela Hall.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No, I need a connecting flight.

ASSISTANT: Do you have any another specifications?

USER: I need a flight in normal-cost.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: That's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.