You are a flight assistant. 
 USER: Hello. I am Emma Rodriguez.

ASSISTANT: Hello, how may I aid you?

USER: I have to give a seminar in ORD, so can you book a  flight ticket for me from IAD?

ASSISTANT: Sure, can you please provide your planned dates of journey?

USER: Thank you and I have planned my dates on 06/10 and 06/12.

ASSISTANT: Sorry Emma, there is no flights to your destination point on your planned dates of journey.

USER: Sad to hear that one but I can reach other agencies to reserve my ticket. Thank you for your service.

ASSISTANT: My pleasure, thank you for reaching out here.