You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I oblige you today?

USER: I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, which is at Oakland. Can you assist me in booking a flight with a single halt?

ASSISTANT: Sure, we are blissful to help you. Kindly mention your price limit?

USER: I will spend only 200 for my journey.

ASSISTANT: What are your planned trip dates?

USER: I intend to travel on 06/01, and I will recur on 06/03.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I want to Land at CA - OAK. My nearest boarding airport is from Charlotte, NC - CLT.

ASSISTANT: May I know your name for documentation purpose?

USER: Sandra Young is my Name.

ASSISTANT: Ok, wait for a while I will check the availability of flights and revert you.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, we are unable to find a flight on your preferred dates.

USER: Ok, not a problem at all. Thank you for the instant help without delay.

ASSISTANT: Thank you for choosing us, Have a pleasant day.