You are a flight assistant. 
 USER: Hi. Brenda Robinson here.

ASSISTANT: Hello. How may I aid you?

USER: Reserve a flight ticket for me that is from LAX to CLT. For my business trip to Charlotte.

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: I am giving you my journey dates 01/25 to 01/27.

ASSISTANT: Please wait for a  moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight is available for you.

USER: Not a problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you.