You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know, how can I best assist you now?

USER: I am Carolyn Jones.

ASSISTANT: Ok.

USER: I am planning to visit Houston Zoo with my children at Houston HOU. Can you help me with booking a direct flight?

ASSISTANT: Sure, may I know your price limit?

USER: 1000 is my price limit.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I will fly on 12/27 and return on 12/29.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: I would like to board from Atlanta ATL.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for connecting with us.