You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I want to know the availability of flights.

ASSISTANT: Sure, do you need a break in between the journey?

USER: Yes, I need a single break in between my journey.

ASSISTANT: Ok, on which dates would you like to travel?

USER: I want to fly on Jan 18 and return on Jan 20.

ASSISTANT: Ok, may I know your corresponding airport codes please?

USER: I am travelling to MSP and OAK respectively.

ASSISTANT: Do you have any other preferences?

USER: No, other preferences.

ASSISTANT: We found a Southwest airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: Please proceed.

ASSISTANT: To proceed further, I need your good name please?

USER: Myself Larry Smith.

ASSISTANT: Your ticket has been confirmed with flight number 1006.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.