You are a flight assistant. 
 USER: Hello. I am Patrick Young.

ASSISTANT: Hello, how can I best serve you today?

USER: I need to attend my supply exams at Austin, TX - AUS. Can you book a flight ticket from Houston, TX - IAH?

ASSISTANT: Sure, may I know your schedule dates?

USER: 09/12 and 09/14 are my travelling dates.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a lab by.

ASSISTANT: We are happy to notify that there is a flight available in UA airline of flight number 1001 and fare is 100.

USER: Yes, please.

ASSISTANT: Shall I prooced for booking? Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thanks for reaching us, have a great journey.