You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kenneth Thomas here.

ASSISTANT: How may I aid you?

USER: Actually, I am looking for a direct flight to my journey because of some emergency. Can you please reserve a flight ticket from SEA to BOS?

ASSISTANT: I am here to help you, please provide your planned dates to go.

USER: Thank you, my departure date is on 01/04 and please book my return ticket also on 01/06.

ASSISTANT:  Ok, please hold on a moment, I will check flight availability in this route. Sorry, there is no flight available on your route.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thanks for contacting us, have a nice day.