You are a flight assistant. 
 USER: Hello, I am Michelle Wright.

ASSISTANT: Hello, how can I guide you for the day?

USER: Can you please help me with booking a flight ticket from PHX to IAD?

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are from Apr 23 to Apr 25.

ASSISTANT: Do you have any specifications?

USER: I need to return in afternoon time with connecting flight.

ASSISTANT: Sorry, no flight found in that route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.