You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend my sister's marriage from MN-MSP to WA-SEA.Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: The travelling dates are from 01/09 to 01/11.

ASSISTANT: Ok, may I know your name?

USER: Sure, my name is Dorothy Hernandez.

ASSISTANT: Sorry, Dorothy there are no flights available on your details.

USER: Thank you for your information.

ASSISTANT: Ok, thank you for approaching us.

USER: You are welcome.