You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I would like to meet my friend at Seattle, can you please reserve flight ticket from IAD to SEA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my planned travelling dates are Aug, 12 and 14 respectively.

ASSISTANT: Can I know your name?

USER: I am Jennifer Lopez here.

ASSISTANT: Let me know your connection limit?

USER: Flight has to be with single connection.

ASSISTANT: Do you have any requirements?

USER: Yes, I prefer to travel in economy class.

ASSISTANT: Sorry to say, there is no flight available for you as per your requests.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.