You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend New York Marathon at New York, so can you please help me in booking a ticket?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are Nov 13 and Nov 15.

ASSISTANT: Let me know your airport codes.

USER: I am heading to EWR from BOS.

ASSISTANT: Do you have any preference?

USER: I need a direct flight in between my journey.

ASSISTANT: Can I know your name?

USER: My name is Shirley Turner.

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

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you.