You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to travel from SEA to SFO for my conference meeting, can you please help me to book my flight ticket?

ASSISTANT: Ok, may I know your travelling dates please?

USER: Sure, I will depart on Oct 6th and return back on Oct 8th.

ASSISTANT: Ok, may I know your name please?

USER: My name is Gregory Jackson.

ASSISTANT: Do you have any requirements?

USER: I prefer for a single connection flight.

ASSISTANT: Sorry Jackson, there is no flight found as per your travelling dates.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.