You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Paul Phillips. I am wrestler, I want to attend a sports meeting in Boston, can you help me for flight booking from HOU to BOS?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are from 08/26 till 08/28.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.