You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Jacob Phillips.

ASSISTANT: How may I assist you?

USER: I want to travel from OAK to IAD for a meeting.

ASSISTANT: Ok, please provide your departure and arrival dates?

USER: My preferable dates are from 12/08 to 12/10.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available for you on your requested dates.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.