You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I'm I'm Nicole Moore.I am planning to attend my brother's wedding anniversary, can you please help me with booking a flight ticket?

ASSISTANT: Ok, can you please provide your travelling dates?

USER: Sure, my departure date is on 06/05 and the return date is on 06/07. Please make sure that the price limit should not exceed 5000.

ASSISTANT: Could you please provide your source and destination codes?

USER: Sure, it is from ALT to HOU.

ASSISTANT: Can you please provide your source code once again?

USER: Sorry, it is from ATL to HOU.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flights found.

USER: Ok, no problem. Anyways, thank you for your help.

ASSISTANT: Thank you.