You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Jason Martinez. I want to book a flight ticket to Boston MA-BOS, can you please assist me in finding a direct flight?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Please let me know your origin airport code?

USER: My origin airport code is at CA-OAK.

ASSISTANT: May I know on which dates you are planning to start and return?

USER: I want to start on 03/27, my return date will be on 03/29.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according  to your requirement.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.