You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you please check the availability of flights from LAS to LGA?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are on Aug 25 and 27.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connected flight.

ASSISTANT: Is there any time concern for you?

USER: My return time is on evening.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Sure, my name is Jason Perez.

ASSISTANT: We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.