You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Emily Lewis from Charlollte. I have planned an event in New York city so please help me with flight ticket booking from Charlotte.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, I need to travel on dates of 12/25 and 12/27.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: Sure, I would like to travel from CLT to JFK as these airports are very much familiar to me.

ASSISTANT: Please give me a moment.

USER: Sure, take your time to check.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Oh! It is sad to hear. Anyway, I will go with another agency this time. Thank you for your time.

ASSISTANT: Welcome, have a great day.