You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am planning to travel from DFW to BOS, help me in booking a flight?

ASSISTANT: Sure, may I know your dates of travel?

USER: My travelling dates are Nov 24 to 26.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: In which airline do you want to travel?

USER: Normal-cost airlines.

ASSISTANT: Any other specifications to be met?

USER: I need direct flight.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's ok, thank you.

ASSISTANT: May I know your name?

USER: Jacob Lewis here.

ASSISTANT: Thank you.