You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I best serve you now?

USER: I have an appointment with my family doctor so I need to book a flight ticket.

ASSISTANT: Ok, may I know your journey places?

USER: My travelling places are from Charlotte, NC- CLT to CA- SFO.

ASSISTANT: Ok, do you need any connection limit?

USER: I need a connection within my journey with 5000 as price limit.

ASSISTANT: Can you please provide me your schedule dates?

USER: Sure, my travelling dates are from 12/15 to 12/17.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for being waiting.Sorry there is no flights found on your journey details. May I know your good name please?

USER: Ok no issues. Thank you so much for the information. I am Charles Rodriguez.

ASSISTANT: Thanks for giving your name. Wish you a nice day.