You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Jack Adams. Can you help me in booking my flight ticket from AUS to LGA?

ASSISTANT: Sure, can I know your travelling dates?

USER: My trip dates will be Nov 11th to Nov 13th.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My return time should be in the evening.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Thank you for giving your valuable time, but there are no flights available based on your request.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.