You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: Can you please book a ticket from BOS to OAK?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My journey dates are on Feb 10 and Feb 12.

ASSISTANT: Ok, please let me know your preferences regarding airlines.

USER: I need a direct flight.

ASSISTANT: Do you have any more specifications to  provide me?

USER: No.

ASSISTANT: Ok, please let me know your good name to proceed further.

USER: My name is Ashley Collins.

ASSISTANT: Please be on hold for a moment.

USER: Sure.

ASSISTANT: Sorry Ashley Collins, no direct flight is available to you on your dates.

USER: Ok, not a problem.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Thank you for providing information.

ASSISTANT: Most welcome.