You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit Atlanta botanical garden with my friends.

ASSISTANT: Ok.

USER: Can you help me to book a ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: My travel dates are 04/15 and 04/17.

ASSISTANT: Do you have any specifications?

USER: Price should not cross 500. I need halt in my journey.

ASSISTANT: Sure, may I know your airport codes of journey?

USER: My airport codes are SEA-ATL.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: May I know your name?

USER: Katherine Lopez here.

ASSISTANT: Sorry, there is no flight found on your given dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.