You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I lend a hand to?

USER: Edward Rodriguez here. I have a conference to attend so could you help me to book a  ticket from OAK to BOS.

ASSISTANT: Sure, I am here to help you for this. when are you planning your trip?

USER: My travel dates are Dec 26 and Dec 28.

ASSISTANT: Is there any other specifications regrading your journey?

USER: I would like to board single connection flight with economy class and depart in the afternoon.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: For further process. May I know your name please?

USER: Already mentioned.

ASSISTANT: Sorry to inform, no flights are found with your criteria.

USER: No issue, thank you for the information.

ASSISTANT: Thank you very much for approaching our agency.