You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Larry Baker, can you help me to book a direct flight from PHX?

ASSISTANT: Sure, please help me with your travel dates.

USER: My planned journey dates are Sept 01 and 03.

ASSISTANT: Ok, please help me with your destination airport code.

USER: I am planning to return from ATL at evening time.

ASSISTANT: Ok, please tell us your preferences.

USER: No, I did not have any other requirements.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: I am sorry to tell you that there is no direct flight available on your preferred travel dates.

USER: No issues, thank you for your response.

ASSISTANT: You are welcome and thank you for choosing us.