You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to go to Phoenix on 05/20 to attend my sister's wedding, can you help me to book a connecting flight?

ASSISTANT: Sure, can you provide me your airport codes?

USER: My airport codes are LAX-PHX.

ASSISTANT: May I know your return date please?

USER: My return date would be on 05/22.

ASSISTANT: May I know your good name please?

USER: My name Betty Evans.

ASSISTANT: Do you have any price limit?

USER: I need the ticket with in the price limit 500.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: We did not found any flights with your given details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thanks for choosing us.