You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Scott.

ASSISTANT: Scott, how can I help you today?

USER: I am planning to visit a new at Washington.Can you please help me out to bOok a ticket from LGA to IAD?

ASSISTANT: Ok, can you help me with your travelling dates?

USER: My travelling dates are 05/09 to 05/11.

ASSISTANT: Ok, wait for a moment please.

USER: Make sure my connection limit is 1. Ok.

ASSISTANT: Sorry to say this, no flights as per your details.

USER: That's fine, thank you for your help.

ASSISTANT: Anything else to help you.

USER: No, I don't have any dates.

ASSISTANT: Thank you for reaching us, have a nice day.