You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to do my project at Oakland, please help me in booking a ticket from DEN to OAK.

ASSISTANT: Can you share your trip dates?

USER: My planned trip dates are on Jan 18 and Jan 20.

ASSISTANT: Do you need any connections?

USER: I need a flight with single connection.

ASSISTANT: Are there any other preferences?

USER: No, thank you for asking.

ASSISTANT: May I know your name?

USER: My name is Matthew Rodriguez.

ASSISTANT: Sorry, there is no flight found with your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.