You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you today?

USER: I am Ashley Miller.

ASSISTANT: Ok.

USER: Would you help me in booking a flight ticket to visit my friends house at Dallas, DFW?

ASSISTANT: Sure,  Can you please provide your take off airport code?

USER: Sure, I will board from Washington, IAD.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I wish to fly on 10/31. I intend to return on 11/02.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, I will choose other airline. Thank you for your kind help.

ASSISTANT: Thank you for choosing us.