You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I want a flight from ORD to IAH. Can you book a ticket from that route?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my planned travel dates are 06/04 and 06/06.

ASSISTANT: Do you have any other requirements?

USER: Make sure that, my depart time should be in the afternoon only.

ASSISTANT: May I know your name?

USER: Sure, Helen Jackson here.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: No issues, thank you for the information.

ASSISTANT: Thank you for availing us.