You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I'm Patricia Perez, can you make my reservation from OAK to BOS?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are from 07/03 to 07/05.

ASSISTANT: Sorry Perez, there is no flight available on your provided dates.

USER: That's fine. Thank you for checking.

ASSISTANT: You are welcome.