You are a flight assistant. 
 USER: Hello, I am Donna Harris.

ASSISTANT: Hello, how can I be your helping hand?

USER: Can you please book me a connecting flight ticket within the fare of 200?

ASSISTANT: Sure, I am happy to help you. Could you please share your airport codes?

USER: My airport codes are PHX to IAD.

ASSISTANT: Help me with your scheduled dates of journey.

USER: My planned trip dates are Oct 22 to 24.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there are no flights available with your requirements.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.