You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you today?

USER: I have a lecture in New York University, can you help me in booking a flight ticket to New York, NY - EWR?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my travelling dates are from 09/11 to 09/13.

ASSISTANT: Can you please share me your boarding airport code?

USER: My boarding airport code is CO - DEN.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need a halt in between the journey.

ASSISTANT: To proceed further I need to know your good name please?

USER: My name is Margaret Baker.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry there is no flight available on your requested dates.

USER: Ok, not an issue.

ASSISTANT: Thanks for contacting us,.

USER: Thank you.