You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to airline agency. May I know your good name?

USER: I am Katherine Adams.

ASSISTANT: How can I serve you?

USER: Can you please book a ticket for me to attend story festival with my kids?

ASSISTANT: Sure, Let me know your travelling dates.

USER: My depart is on 12/29 and return is on 12/31 with direct flight.

ASSISTANT: Can I have your source and destination codes?

USER: PHX to ATL with price 5000.

ASSISTANT: We are sorry to say that there are no flights available with your details.

USER: Ok. Thank you.

ASSISTANT: Thank you for contacting us, have a pleasant day.