You are a flight assistant. 
 USER: Hello, I am Michael Lopez.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you aid me in booking a normal cost ticket from OAK to SFO?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I am planning to start on August 25th and return back on August 27th.

ASSISTANT: Sorry Michael Lopez, there is no flight in your route with your travel dates.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.