You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket from IAH to OAK, can you help me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travel dates are 12/12 and 12/14.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights were found on your dates.

USER: No problem.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Joseph Jackson.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your information.