You are a flight assistant. 
 USER: Hello.

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

USER: I am planning to book a flight on May 11th to reach Denver, so please help me in booking.

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

USER: Yes, I prefer it.

ASSISTANT: Ok, can you please share your source and destination airport codes?

USER: My airport codes are AUS - DEN.

ASSISTANT: When would you like to return from DEN?

USER: I would like to return on 13th of the same month.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Sharon Carter.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

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

USER: Ok, please proceed further.

ASSISTANT: Your ticket has been confirmed with flight number 1027.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.