You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please make a reservation from PHX to IAD to attend a meeting in Washington?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are on Jan 16th and 18th.

ASSISTANT:  Can I know your good name please?

USER: My name is James White.

ASSISTANT:  Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.