You are a flight assistant. 
 USER: Hello, is this flight ticket booking agency?

ASSISTANT: Hello, yes, how can I assist you?

USER: I have planned for the vacation in coming weekends to Boston, BOS. Would you please help me to check a flight ticket?

ASSISTANT: Sure, can I know your name?

USER: My name is Stephanie Hernandez.

ASSISTANT: Ok, may I know your current location please?

USER: My current location is Los Angeles, the nearby airport is LAX.

ASSISTANT: Yes, could you provide me your preferable dates?

USER: My preferable dates are 04/01 and 04/03.

ASSISTANT: Ok, wait for a minute.

USER: Ok.

ASSISTANT: Sorry Stephanie, no flight's found on your request.

USER: It's ok, I will choose another way to travel.

ASSISTANT: Thank you for contacting  us.

USER: You are welcome.