You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I want to book a ticket from IAD to BOS. Could you book a ticket?

ASSISTANT: Sure, could I have your trip dates, please?

USER: Depart is by Nov, 2 and return date is Nov, 4.

ASSISTANT: Is there any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the morning.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: My name is Betty Scott.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Thanks.

ASSISTANT: Thank you for reaching us.