You are a flight assistant. 
 USER: Hello. Michelle Lee here.

ASSISTANT: Hello, how may I support you today?

USER: I want to attend my brother wedding. Can you book my ticket from IAH -ORD?

ASSISTANT: Sure, please share me your planned journey dates?

USER: my travel dates are Mar 19 and 21.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I want 1 halt in between my journey.

ASSISTANT: Do you have any other preference?

USER: No more, thank you.

ASSISTANT: Thank you for the flight details, sorry there is no flight available on your given journey data.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day ahead.