You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to book a flight ticket to SFO to meet my childhood friend. Can you please aid me for booking from CLT?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My planned dates are on May 21 and 23.

ASSISTANT: May I know your name please?

USER: My name is Brandon Parker.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us.