You are a flight assistant. 
 USER: Hello, I am Sandra Thomas.

ASSISTANT: Hello Sandra Thomas, what sort of help are you seeking from me?

USER: I want to go to Southwest Wildlife Conservation Center in Phoenix to donate money for the sake of many wild life animals as it is a non profit organisation. So, will you help me to book a flight ticket?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Please let me know your journey dates to search a flight for you?

USER: I want to travel on 01/17 and need to catch return flight on 01/19.

ASSISTANT: Ok, from where you would like to start your journey?

USER: I would to like to start from my nearest airport Austin, TX - AUS.

ASSISTANT: Ok, Help me with your destination airport code?

USER: My destination is at Phoenix, AZ - PHX.

ASSISTANT: Ok, may I know your affordable price range?

USER: I can afford upto 200 for a ticket.

ASSISTANT: Thanks for providing the details. Please wait for a minute, I will revert you with the availability.

USER: Sure.

ASSISTANT: Thank you for waiting. We apologise, but at this time there are no flights to your desired location.

USER: Thank you for the information, I will replan my trip and back to you for booking.

ASSISTANT: Thanks for choosing us, We hope you will visit again!.