You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I aid you?

USER: I want to book a direct flight ticket to visit my grandparents home at CA-OAK from NC-CLT.

ASSISTANT: Sure, may I know the price limit?

USER: 200 is my price.

ASSISTANT: Can you please provide your travelling dates?

USER: 06/18 and 06/20 are my travelling dates.

ASSISTANT: Kindly provide your name.

USER: I am Samantha Garcia.

ASSISTANT: Thank you for the information but I am sorry to inform that there is no flight found matching your requirements.

USER: No issue. Thank you for your help.

ASSISTANT: Have a good day.