You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Helen Jones.

ASSISTANT: Ok.

USER: I am looking to book a flight ticket with single connection. Can you help me for that?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my travelling dates are 02/18 and 02/20.

ASSISTANT: May I know your airport codes?

USER: My airport codes are MCO and PHL.

ASSISTANT: May I know your price limit?

USER: My price limit is 5000.

ASSISTANT: Sorry, no flight found on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.