You are a flight assistant. 
 USER: Hello, I am Katherine Anderson.

ASSISTANT: Hello, How can I serve you?

USER: I need a direct flight to meet my childhood friend after long time at Seattle,SEA.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from Minneapolis & St. Paul, MSP?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My depart is on 11/19 and return is on 11/21.

ASSISTANT: There is no direct flight available with your details.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thanks for choosing us.