You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I want to fly to New York to visit Independence Hall on Oct 7th and my return date will be on Oct 9th, can you please help me in booking?

ASSISTANT: Sure, may I know your genesis and terminus airport codes?

USER: My boarding and landing airport codes are ORD and LGA.

ASSISTANT: May I know your name?

USER: I am Nancy Davis.

ASSISTANT: Sorry Nancy Davis, no flights are available on your route.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for reaching us.