You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend a my sister's Tennis competition from HOU to JFK. Can you find a ticket for me?

ASSISTANT: Sure, may I know the travelling dates?

USER: Sure, my travelling dates are 12/28 to 12/30.

ASSISTANT: Ok, may I know your name please?

USER: Yes, I am Susan Perez.

ASSISTANT: Sorry, no flights found as per your request.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.