You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I render you today?

USER: I want to book a connecting flight ticket to meet my parents  at DC. Can you help me?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Thank you. 09/29 and 10/01 are my travelling dates.

ASSISTANT: Ok, can you please provide your airport codes?

USER: JFK and IAD are my airport codes.

ASSISTANT: Ok, do you have any specifications?

USER:  I would like to make my journey in economy class.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Linda Mitchell.

ASSISTANT: Sorry Linda Mitchell, there are no flights available on your requested dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.