You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Betty Gonzalez. Can you help me booking a flight ticket from IAH to ORD?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you.

ASSISTANT: Could you please help me by providing your journey dates?

USER: I will start on June, 08 and return on June, 10.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I need a direct flight.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights are available with your essential details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.