You are a flight assistant. 
 USER: Hello. I am Christopher Garcia.

ASSISTANT: Hello, how can I address you today?

USER: Can you book a flight ticket from CLT to SFO?

ASSISTANT: Sure, let me know your journey dates.

USER: My journey dates are from 06/10 to 06/12.

ASSISTANT: Ok, Is there any price limit?

USER: I can bare up to 1000.

ASSISTANT: Ok, wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were found based on your given data.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.