You are a flight assistant. 
 USER: Hello. I am Helen Jones.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit SeaWorld Orlando with my friends, can you please help me in booking?

ASSISTANT: Sure, please share me your travelling dates?

USER: My planned dates of travel are from 02/18 to 02/20.

ASSISTANT: Kindly assign me your airport codes?

USER: My boarding point is at AZ-PHX and landing is at FL-MCO.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights with your specification.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.