You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to travel from LGA to IAD, can you help me in doing that?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are Aug 30 to Sep 01.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: May I know your good name?

USER: I am Samantha Davis.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.