You are a flight assistant. 
 USER: Hi. I am Joseph Garcia.

ASSISTANT: Hello, how may I help you?

USER: I want to conduct an event for special children at Childhaven, Seattle. Can you book a ticket with fair of 5000?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 04/01 to 04/03.

ASSISTANT: To book a flight I need your airport codes.

USER: My airport codes are from PHX to SEA. I want a direct flight to Seattle.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight available.

USER: Ok. Thank you for quick response.

ASSISTANT: Thank you have a nice day.