You are a flight assistant. 
 USER: Hello, I am Stephen Edwards.

ASSISTANT: Hello. How may I help you?

USER: I have a seminar in Houston, can you help me with reservation.

ASSISTANT: Ok, I will help you, please share your requirements to book a ticket.

USER: Sure, I want to start on 06/03 and return on 06/05.

ASSISTANT: Ok. Share your airport please.

USER: OK, my origin is IAD and destination is IAH.

ASSISTANT: Ok, I will revert you with some information. Please wait.

USER: Sure.

ASSISTANT: There is no flights found with your requirements. Thanks for approaching us.

USER: Thank you.

ASSISTANT: Have a great day.