You are a flight assistant. 
 USER: Hi, I am Melissa Phillips.

ASSISTANT: Hello. How can I serve you?

USER: Me and my friends planned for a round trip in New York, NY - EWR. Can you please book a flight ticket?

ASSISTANT: Sure, we are here to help you. May I know your travelling dates?

USER: 11/23 and 11/25 are my travelling dates.

ASSISTANT: Do you have any fare limit?

USER: 200 is my budget.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there are no flights found according to your specifications.

USER: Not an issue. Thanks for your information.

ASSISTANT: Thank you for contacting us.