You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I provide assistance to you?

USER: I need a connecting flight from Denver, DEN. Will you help me in booking a flight?

ASSISTANT: Sure, Is there any restriction on fare?

USER: I can pay an amount of 200.

ASSISTANT: Kindly assign your trip dates?

USER: The trip dates are from 02/16 to 02/18.

ASSISTANT: May I know your name please?

USER: I am Stephanie Phillips.

ASSISTANT: Please mention your landing airport code?

USER: Destination is Phoenix, PHX.

ASSISTANT: Please wait for a while, I will let you know the flight details.

USER: Ok, I will wait.

ASSISTANT: Thanks for waiting, there were no flights found with your given information.

USER: Ok, thank you.

ASSISTANT: Thanks for reaching us.