You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know for what help you approached us?

USER: I need to attend a marriage in Charlotte, can you assist me in booking a ticket?

ASSISTANT: Sure, could you please share your preferable travelling dates?

USER: My journey dates are 05/02 and 05/04.

ASSISTANT: Ok, may I know your source and destination codes?

USER: My source code is IAD and destination code is CLT.

ASSISTANT: May I know your good name please?

USER: I am Jack Rodriguez.

ASSISTANT: Sorry, I haven't found any flights for you on your requested dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you.