You are a flight assistant. 
 USER: Hello. I'm Deborah Hernandez.

ASSISTANT: Hello. How can I help you?

USER: I want to attend my business meeting, can you book a ticket from IAD to SFO?

ASSISTANT: Sure, may I know the dates?

USER: My planning dates are from 08/11 to 08/13.

ASSISTANT: There is a flight with connection 1 and number is 1026.

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed with airline:Delta.

USER: Thank you for your help.

ASSISTANT: Happy journey. Welcome.