You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am looking for a flight from SFO to DEN, can you please help m in booking?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are July 25 and July 27.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: My name is Edward Allen.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for availing us.