You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I serve you?

USER: I want to book a flight ticket to visit Perot Museum of Nature and Science in Dallas & Fort Worth. Can you please book a flight ticket from Phoenix, AZ - PHX?

ASSISTANT: Sure, May I know the destination code?

USER: My landing airport code is TX - DFW.

ASSISTANT: Please help me with your travel dates.

USER: I will fly on 09/30 and return on 10/02.

ASSISTANT: May I know your name?

USER: I am Christopher Parker.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: It's ok, no issues. Thanks for your response.

ASSISTANT: Thank you for opting us.