You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is Janet White.

ASSISTANT: White, how can I assist you today?

USER: I am planning to attend by cousin's marriage in HAH , could you please help me in booking a flight ticket? Sorry, my source and destination codes are from LAX to IAH.

ASSISTANT: Sure, may I know when is your sister marriage and when you want return your home town?

USER: My preferable travelling dates are from 08/29 to 08/31.

ASSISTANT: White sorry, for this inconvenience. I cannot find any flights with your request.

USER: Ok, thank you for your response.

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