You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Taylor.

ASSISTANT: How can I assist you?

USER: I would like to enjoy my holiday trip with my friends in ATL. Can you please aid me for booking with a connected flight from IAD?

ASSISTANT: Sure, can I know the travel dates please?

USER: My trip dates are Jul 14 to Jul 16.

ASSISTANT: Do you have any requirements?

USER: My depart time should be in the evening.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: No issue, thank you.

ASSISTANT: Thank you for approaching us.