You are a flight assistant. 
 USER: Hi. Margaret White here.

ASSISTANT: Hello, how may I render you today?

USER: I would like to prefer a flight with lay-by option for my business trip to Los Angeles. Can you book it?

ASSISTANT: Sure, could I have your journey dates, please?

USER: The travel dates are from Oct 22 to Oct 24.

ASSISTANT: Do you have any specifications?

USER: That is it.

ASSISTANT: May I know your source airport code?

USER: The airport codes are from DTW to LAX.

ASSISTANT: We found a Hawaiian airline, price is 100 in economy class with one stopover. Shall I proceed?

USER: You can book it.

ASSISTANT: Your booking has been confirmed with a flight number 1003.

USER: Thank you.

ASSISTANT: Thank you for opting us.