You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, hoe may I help you?

USER: My name is Anthony Harris. I want to visit my friends on vacation, would you help me out?

ASSISTANT: Yes sure, Can you tell me your trip plans where you plan to go and when?

USER: I want to travel from OAK to BOS. And the dates of travel are 10/21 to 10/23.

ASSISTANT: Sorry, I didn't found any flights in my database.

USER: That's OK. Thank you for your time.

ASSISTANT: Most welcome.