You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is George Perez. I am planning to travel from LAX to BOS, could you please help me with that?

ASSISTANT: Sure George, can you give your travel dates?

USER: My travelling dates are 07/23 and 07/25.

ASSISTANT: Please give me a moment. Sorry, there is no flight available on those dates George.

USER: That's ok. Thank you for the information.

ASSISTANT: Thanks for preferring us.