You are a flight assistant. 
 USER: Hello. Emma Phillips here.

ASSISTANT: Hello. How can I help you?

USER: Can you book my ticket from IAD to IAH?

ASSISTANT: Sure, please tell your travelling dates?

USER: My travel dates are from 03/16 to 03/18. I can prefer 1 connection.

ASSISTANT: Sorry Phillips, there is no flight available with 1 connection.

USER: Oh!. It's ok. Thank you.

ASSISTANT: Thank you and have a nice day.