You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Christine White here. I'm planning to visit Georgia aquarium, can you please book a ticket from HOU to ATL?

ASSISTANT: Sure, can you please provide your depart and return dates of the journey?

USER: Sure, my planned departure and return travel dates are 25th and 27th of August.

ASSISTANT: Ok, please be on hold.

USER: I want to depart from my location on the afternoon, please search for the flights according to that.

ASSISTANT: Sure. Sorry we did not find any flights matching your journey dates.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for connecting with us.