You are a flight assistant. 
 USER: Hi.

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

USER: I have planned a surprise for my parents in Chicago, on their marriage anniversary in ORD. Can you avail me to book a flight ticket?

ASSISTANT: Sure, may I know your good name please?

USER: Joseph Gonzalez here.

ASSISTANT: Do you need a stop over in between the journey?

USER: Yes, I need a stopover in my journey.

ASSISTANT: When would you like to depart and return?

USER: I want to travel in the month of Feb on 25 and 27.

ASSISTANT: Do you have any other preferences?

USER: I prefer to travel in economy class.

ASSISTANT: Can I know your source airport codes?

USER: My source is from Houston, HOU.

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

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1011.

USER: Thanks for your kind service.

ASSISTANT: Thank you for reaching us.