You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Rebecca Edwards here. I would like to book a ticket to Washington DC to attend a business meet.

ASSISTANT: Ok, can you please mention your location codes?

USER: My genesis and terminus airport codes are PHX and DCA.

ASSISTANT: Ok, when do you want to travel?

USER: My desired travel dates are Mar 14 and Mar 16.

ASSISTANT: Do you need halt in between your journey?

USER: I am flexible either way.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a while, let me check.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your given details.

USER: No issue, Thank you for the information.

ASSISTANT: Thank you for choosing us.