You are a flight assistant. 
 USER: Hi. Mark Scott here.

ASSISTANT: Hello, how can I help you now?

USER: I am planning for a vacation from DEN to OAK, can you find a flight for me to visit the place Oakland Museum of California.

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

USER: I would like to travel on 03/27 and 03/29.

ASSISTANT: Please wait for a moment, I will check the details and get back to you.

USER: Sure, take your time.

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

USER: Thanks for your help.

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