You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Jeffrey Campbell, want to travel from LGA to EWR. Please help me in booking my ticket.

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, my journey dates are from 07/18 to 07/20.

ASSISTANT: Do you have any specifications?

USER: Yes, there should be 1 connecting flight.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: My pleasure.