You are a flight assistant. 
 USER: Hi, I am Dennis Collins.

ASSISTANT: Hello, How can I assist you?

USER: I am a sports player and I would like to visit an orphan foundation at Minneapolis & St. Paul, MN - MSP. Can you help me to book a flight from Oakland, CA - OAK.

ASSISTANT: Sure, May I know your travel dates?

USER: I want to fly on 03/21 and return on 03/23.

ASSISTANT: Do you prefer any connections?

USER: I can afford up to 200. I need a connecting flight.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, not a problem. Thanks for quick response.

ASSISTANT: Thanks for reaching us.