You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I help you?

USER: I need to book a ticket from  MN-MSP to WA-SEA.

ASSISTANT: Sure, can you please provide your journey dates?

USER: Sure,My journey dates are departure date on July/12 to arrival date on July/14.

ASSISTANT: OK, wait a moment.

USER: OK.

ASSISTANT: I will check and revert back to you. Thank you for waiting. Sorry, The flights are not available. May I know your name please?

USER: OK.My name is Barbara Moore. OK.thank you for your information.

ASSISTANT: Thank you have a nice day.