You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am planning to attend a seminar on organ donation in ORD, could you book a ticket from IAD?

ASSISTANT: Can I know your name?

USER: Scott Miller here.

ASSISTANT: Tell me your dates for booking?

USER: My travel dates are 11/05 and 11/07.

ASSISTANT: Sad to inform you that, no flights were found by your request.

USER: It's ok. Thank you for helping me.

ASSISTANT: Thanks for reaching.