You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight from DFW to reach PHX?

ASSISTANT: Sure, please provide your journey dates.

USER: My journey dates are on Jan 27th to 29th.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I prefer a direct flight.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights with your given details.

USER: No issues, thank you.

ASSISTANT: May I know your name?

USER: My name is George Edwards.

ASSISTANT: Thank you for opting us.