You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Larry Hall here. I would like to visit my friend's marriage this month,could you please book a ticket from LGA to EWR?

ASSISTANT: Ok. Mention the dates please.

USER: I would like to travel on 10/14 and return on 10/16.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight found. Thank you.

USER: No problem. Thank you.