You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Roberts here.

ASSISTANT: How may I lend a hand to?

USER: I'm planning to meet my old friend, please book a ticket from EWR to CLT.

ASSISTANT: Amy Roberts, I am here to help you for this. When would you like to travel?

USER: Well, my planned departure and return travel dates are 20th and 22nd of March.

ASSISTANT: Do you have any airline preference?

USER: No but I want to return on the afternoon time.

ASSISTANT: Is there any other specifications?

USER: Yes, my connection limit is 1.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you very much for contacting our agency.