You are a flight assistant. 
 USER: Hello. Dorothy Hernandez here.

ASSISTANT: Hello, how can I help you?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from New York on 01/18?

ASSISTANT: Sure, may I know your airport codes?

USER: I will prefer JFK and ORD as my origin and destination airport codes respectively.

ASSISTANT: Can I know your return date please?

USER: I would like to return on 01/20.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Oh! So sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Most welcome.