You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Cynthia Thompson here.

ASSISTANT: How can I aid you at this moment?

USER: I want to reserve my ticket from IAD for a roundup trip, can you please help me?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May  I know your preferable travel dates?

USER: Sure, my planned dates of journey are from Apr, 17 to Apr, 19.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a direct flight to travel.

ASSISTANT: There  are no direct  flights available in your route.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching our agency, have a great day.