You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you now?

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

ASSISTANT: Ok, can you please mention the travelling dates of your journey?

USER: My travel dates are 03/06 and 03/08.

ASSISTANT: Ok, please wait for a while. Ok, may I know your name please?

USER: Myself Samantha Thompson.

ASSISTANT: Sorry, there are no flights found on your requested dates.

USER: No problem, thanks for checking.

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