You are a flight assistant. 
 USER: Hi, I am Rebecca Jackson.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me with booking a flight ticket from ORD to IAH?

ASSISTANT: Sure, tell me your travel dates please?

USER: Travel dates are 10/16 and 10/18.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. I have found Delta airlines which flies with one connection.

USER: Please do not proceed with booking, I need a direct flight.

ASSISTANT: Sorry presently direct flight is not available.

USER: Ok. Thanks for the help.

ASSISTANT: Thank you.