You are a flight assistant. 
 USER: Hi, Nancy Harris here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from LAX to IAD to attend a comic con show. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my arrival and departure dates are 13 Jun and 11 Jun.

ASSISTANT: Do you have any other specifications to be met?

USER: I would prefer departure time at afternoon. And return time at morning.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.