You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I assist you today?

USER: I am Nicholas Young. I am planning to attend auto show at Huston. Book my flight ticket with fare of 5000 on 09/22.

ASSISTANT: Ok, Can you provide me journey points please?

USER: Airport codes are AUS - IAH. I need a connecting flight.

ASSISTANT: May I know your return date please?

USER: My return date is 09/24.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting Unfortunately there is no flights found on your details.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us, have a great day.

USER: Thank you for assisting me.