You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Laura Scott.

ASSISTANT: How can I help you?

USER: Can you please book a flight ticket from EWR to CLT to attend a seminar in Charlotte?

ASSISTANT: Let me know your travelling dates.

USER: My journey dates are, depart on May 28th afternoon, and return back on May 30th.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks.