You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am John Evans.

ASSISTANT: Ok John, how may I help you?

USER: I am planning to book a ticket, can you help me out?

ASSISTANT: Sure, I can help you. Please provide the airport codes?

USER: I want o go from TX-AUS to TX-IAH.

ASSISTANT: Please provide the dates?

USER: These are my travelling dates 11/08 to 11/10. My price limit is 500 and connection should be 1.

ASSISTANT: Sorry John, I could not found any flight with 1 connection on your dates.

USER: That's fine. Thank you for your help.

ASSISTANT: Ok, thank you for reaching us.