You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Laura Evans. I would like to travel from IAH to HOU. Can you please help me to book a ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to start on Aug 17 an return on Aug 19.

ASSISTANT: Do you have specifications?

USER: I need a connecting flight with normal - cost airlines. I want depart in the evening.

ASSISTANT: Ok, do you have any class preferences?

USER: No.

ASSISTANT: Sorry to say, there are no flights available for your desired normal cost airlines.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.