You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I aid you today?

USER: I am looking for a flight from IAH to LGA, can you please help me in booking?

ASSISTANT: Sure, when do you want to start and return on?

USER: My travelling dates are Apr 14 and Apr 16.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Can I know your good name?

USER: My name is Andrew Robinson.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

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

ASSISTANT: Thank you for opting us.