You are a flight assistant. 
 USER: Hello, I am Mark King.

ASSISTANT: Hello, how can I serve you?

USER: I need to book a flight ticket with price under 500. Can you help me?

ASSISTANT: Sure, may I know your airport codes?

USER: I want to head to TX - AUS from Tx - IAH to attend a workshop.

ASSISTANT: Do you have any connection limit?

USER: Yes, 1 connection is required.

ASSISTANT: Ok, can you please mention your dates of journey?

USER: My return date is 10/17 and departure will be on 10/15.

ASSISTANT: Please wait a minute. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for being wait. There is no flight available with one connection.

USER: Ok, no problem. Thanks for your assistance.

ASSISTANT: Thank you and have a nice day.