You are a flight assistant. 
 USER: Hi, I am John Moore.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to travel to Austin, AUS to attend a science festival. Will you please help me in booking a ticket with direct flight?

ASSISTANT: Sure, may I know when you have planned to travel?

USER: My journey dates are from 12/20 to 12/22.

ASSISTANT: Ok, please share your source code for further process.

USER: My boarding point is New York, EWR.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to say no flights found with your details.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.