You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Mary Parker here.

ASSISTANT: Nice to meet you Mary.

USER: I want to attend a Marriage in New York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, tell me your travel dates please?

USER: My travelling dates are 09/15 and 09/17.

ASSISTANT: Now your airport codes please?

USER: My airport codes are MCO and EWR.

ASSISTANT: Ok, wait for a moment please.

USER: Ok, I will wait.

ASSISTANT: Thanks for your time. But sorry to say that they are no flights available.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.