You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra White.

ASSISTANT: How may I help you today?

USER: I am looking for a direct flight, could you please help me with booking a direct flight?

ASSISTANT: I would be happy help you with that, can you share your travelling dates?

USER: I would like to take off on 06/28 and return on 06/30.

ASSISTANT: May I know your airport codes?

USER: My nearest source airport code is IAH and destination airport code is LGA.

ASSISTANT: Wait for a minute.

USER: Sure.

ASSISTANT: I am sorry there is no flight with that connection.

USER: That's ok, I will find an another alternate way to complete my trip.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Thank you for the information.