You are a flight assistant. 
 USER: Hello, Betty Collins here.

ASSISTANT: Hello. How can I assist you?

USER: I am foodie, I wish to attend the food festival that's going to happen in New York. Please book a flight ticket.

ASSISTANT: Sure, may I know your airport codes?

USER: AUS and EWR are the source and destination airport codes.

ASSISTANT: May I know your travel dates?

USER: June 15 and 17 are my planned travel dates.

ASSISTANT: Ok, do you have any preferences?

USER: I need to have a lay-off in my journey.

ASSISTANT: Sorry, we couldn't found any flights for you.

USER: Oh! I don't want to miss the festival. I will check with another service provider. Thank you for the help.

ASSISTANT: Thank you for reaching us.