You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to find a flight for my journey to my aunt's home for this summer vacations?

ASSISTANT: Sure, to book a ticket can I know your airport codes?

USER: My airport codes are from PHX to MCO.

ASSISTANT: When you are planning to travel?

USER: My journey dates are from May 19th to May 21st.

ASSISTANT: May I know your good name please?

USER: My name is Benjamin Thompson.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight, I don't have any other specifications.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.