You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: My name is Barbara Brown, I want to book a normal-cost airline to visit Washington. Can you book a connecting flight for me?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I will fly on June 5th and return on June 7th.

ASSISTANT: May I know your location airport codes?

USER: My source point is PHX and my destination is IAD.

ASSISTANT: Is there any other requirement?

USER: Yes, I want return flight in afternoon.

ASSISTANT: Sorry Barbara Brown, there is no flight  in your route as per your requirement.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.