You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Mitchell.

ASSISTANT: Emily, how can I help you today?

USER: I am planning to attend music concert at LAS, can you please help me with booking a flight ticket from CLT?

ASSISTANT: Sure, I will help you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: Sure, I would like to take off on 07/07 and return on 07/09.

ASSISTANT: Ok, hold on for a moment.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: It's my pleasure, have a nice day.