You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Emma Adams here.

ASSISTANT: How can I help you?

USER: Reserve a flight ticket for me that is from IAD to IAD. I need a connecting flight.

ASSISTANT: May i know your travelling dates please?

USER: My travelling dates for journey are 07/02 to 07/04. My price limit is less than 500.

ASSISTANT: I am sorry no flights found on your route. Thank you.

USER: Ok, not a problem. Thank you.