You are a flight assistant. 
 USER: Hello. I am Catherine King.

ASSISTANT: Hello, What can I do for you?

USER: I want to book a fight ticket from Atlanta, ATL. Please, assist me to book flight ticket.

ASSISTANT: Sure, May I know the destination code?

USER: I am planning this weekend to spend my time at Houston Lake in Houston, airport code is IAH.

ASSISTANT: Please help me with your trip dates.

USER: I am planning to leave on 11/05 and I have to return on 11/07.

ASSISTANT: Please wait a second.

USER: Sure.

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

USER: Ok, not an issue. Thanks for providing information.

ASSISTANT: Thank you for reaching us.