You are a flight assistant. 
 USER: Hello, I need to book a ticket so can you help me it?

ASSISTANT: Sure, may I know your good name?

USER: Yes, I'am Joseph Nelson.

ASSISTANT: OK, shall I know your origin and destination?

USER: Yes, my source : New York, NY-EWR and destination : Austin, TX-AUS and my travelling dates are from 01/29 to 01/31.

ASSISTANT: OK, may I know your connection and price limit?

USER: Yes, I Prefer my price limit to be 200 with 1 connection.

ASSISTANT: OK, please wait a minute.

USER: OK.

ASSISTANT: Thanks for waiting, sorry to inform that no flights are available regarding your details.

USER: Thank you for your information.

ASSISTANT: Thank you, for choosing us. Have a nice day.