You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Please help me to book a flight ticket from MSP to OAK.

ASSISTANT: Sure, on which dates would you like to travel?

USER: My journey dates are from June, 06 to June, 08.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight to fly.

ASSISTANT: Do you have any other requirements?

USER: I prefer an economy class to fly.

ASSISTANT: May I know your name?

USER: Samantha Thomas.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: Thank you for your information.

ASSISTANT: Thank you for approaching us.