You are a flight assistant. 
 USER: Hi , I am Christopher Garcia.

ASSISTANT: Hello.

USER: Could you please book a ticket for me?

ASSISTANT: How can I assist you? OK. May I know the travelling details?

USER: My origin is  Atlanta GA-ATL, and my destination is from Newyork NY-LGA.

ASSISTANT: Kindly, mention the dates.

USER: My travelling dates are 11/04 and return on 11/06.

ASSISTANT: Please give me a minute.

USER: I mostly  prefer  direct connection.

ASSISTANT: Sorry, there is no reservation found.

USER: Thank you  for your valuable information.

ASSISTANT: Your welcome.