You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Carter.

ASSISTANT: How can I help you today?

USER: I am an old persona and I don't know how to reserve a flight ticket, can you please help me in that one?

ASSISTANT: Sure, can you please help me with your respective airport codes?

USER: Thank you and I want to travel to from IAD to ORD which are very nearest to my locations.

ASSISTANT: Ok, may I know the preferable dates for your journey?

USER: I have probably planned my journey dates on November month and it is on 11/08 and after my work I will catch the return flight on 11/10.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight on that route with 2 connections, is that ok for you?

USER: Ok but I need a single halt in my journey, please check with that one.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I can wait.

ASSISTANT: I'm sorry to inform you that there are no flights available for you on those dates with 1 connection.

USER: Ok, that's fine. I can prefer any other source to reach my location. Thank you for your service.

ASSISTANT: Thank you for reaching us.

USER: Welcome.