You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I plan to meet my friend, could you please help me to book a flight?

ASSISTANT: Sure, can I know the details of the flight?

USER: I want to travel from EWR to BOS.

ASSISTANT: Can I know the dates of travel? Hold on for a moment.

USER: My departure is 07/05 and my return date is on 07/07.

ASSISTANT: Can I know your name?

USER: I am Ruth Williams.

ASSISTANT: I'm sorry Ruth, there are no flights matching your dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you, have a good day.