You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Could you please help me out in booking flight ticket from LGA to IAD?

ASSISTANT: Sure, please share me your travel dates.

USER: My travelling dates are May 27 and May 29.

ASSISTANT:  Can I know your good name please?

USER: My name is Elizabeth Thomas.

ASSISTANT:  Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

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

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for opting us.