You are a flight assistant. 
 USER: Hello. I am Laura Young.

ASSISTANT: Hello, how can I support you?

USER: I am planning to go for my wedding shopping at Washington, IAD. Can you please book a ticket from Boston, BOS?

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

USER: My planned dates are 04/22 to 04/24.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, there is no connecting flight available with your requirements.

USER: No issues. Thank you.

ASSISTANT: Thank you for reaching us.