You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Deborah Lopez. I need to go for a cricket match live event at Charlotte, can you help me to book a flight ticket?

ASSISTANT: Sure, please provide me your airport codes.

USER: My airport codes are HOU and CLT.

ASSISTANT: Ok, may I know your travelling dates?

USER: My planned dates are 11/13 and 11/15.

ASSISTANT: Ok, wait a moment.

USER: Sure.

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

USER: That's ok. Thank you for the help.

ASSISTANT: Thank you, have a nice day.