You are a flight assistant. 
 USER: Hello, Angela Baker here.

ASSISTANT: Hello, hoe can I help you today?

USER: Can you please help me in booking my flight ticket from IAD to PHX?

ASSISTANT: Sure, may I know your journey dates?

USER: My planned journey dates are Jan 19-21.

ASSISTANT: Let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Ok, any other requirements to be met?

USER: I want to return in the evening.

ASSISTANT: Sorry to notify that, we did not find any flights according to your mentioned details.

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

ASSISTANT: Thank you for reaching us.