You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Frank Williams.

ASSISTANT: Ok.

USER: From so many days I am planning to visit Heard Museum located in Phoenix, can you please help me in booking a ticket on my planned dates?

ASSISTANT: Sure, can I know your preferable dates?

USER: My preferable dates are from 04/10 to 04/12.

ASSISTANT: Ok, can I know the source and destination airport codes?

USER: As I stay in Chicago, I will be travelling from ORD to PHX.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok, take your time and make sure that the connection is 1.

ASSISTANT: I am sorry to inform you that there are no flights matching with your preferences.

USER: That's so sad to hear. Thank you for your valuable time.

ASSISTANT: Thank you, have a good day.