You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Ruth Adams here.

ASSISTANT: How can I assist you at this moment?

USER: My airport codes for boarding the flight are LAS to MCO. Can you book a flight ticket?

ASSISTANT: Sure Ruth Adams, I will help you with that.

USER: My price limit is less than 200.

ASSISTANT: Can I have your travel dates please?

USER: My travelling dates for journey are 03/26 to 03/28.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Ruth Adams, no flight is available to you on your dates.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.