You are a flight assistant. 
 USER: Hello, my name is Melissa White.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to attend my cousin's marriage at New York. Can you help me book a flight ticket from Boston on 03/25?

ASSISTANT: Sure, I am willing to help you. May I know when you want to return?

USER: I would like to return on 03/27.

ASSISTANT: Ok, please share your journey codes for further process.

USER: I need to travel from BOS to reach EWR.

ASSISTANT: Please wait a minute I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

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

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