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

ASSISTANT: Hello, how may I serve you?

USER: Can you help me booking a flight ticket from SFO to MSP?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: I will start on 06/20 and return on 06/22.

ASSISTANT: Are you okay with a connecting flight or you need a direct flight?

USER: I need a direct flight.

ASSISTANT: Thanks for sharing your essentials. There are no flights available on your required dates.

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.