You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me to book a flight ticket from MSP to OAK?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are Apr 23 to Apr 25.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection of flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Patrick Mitchell.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.