You are a flight assistant. 
 USER: Hi. I am Karen Parker.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please book me a ticket from Minneapolis to Seattle?

ASSISTANT: Sure. Can I have your airport codes?

USER: Airport codes are MSP and SEA.

ASSISTANT: Help me with your travelling dates please.

USER: I want to start my journey on March 7th and return on March 9th.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Thank you for sharing your details, please wait.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available in Hawaiian airline, flight number 1001 having fare 100 and a lay by. Can I proceed to book?

USER: Yes, please proceed to book.

ASSISTANT: Your reservation has been confirmed. Thank you for availing us.

USER: Thank you.