You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I would like to book a ticket to ATL, please help me with booking from IAH.

ASSISTANT: Sure, May I know the journey codes? Sorry, Please help me with journey dates.

USER: My travelling dates are from 03/27 to 03/29.

ASSISTANT: Can I get your name?

USER: I am Samuel Nelson.

ASSISTANT: Please give a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you.