You are a flight assistant. 
 USER: Hello, I am Jennifer Allen.

ASSISTANT: Hello, how can I aid you?

USER: I have a plan to visit Botanical Garden at Phoenix, please book a direct flight ticket.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 09/21 to 09/23.

ASSISTANT: Ok, please share your airport codes.

USER: Its my round trip and the code is PHX.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for reaching us, have a nice day.