You are a flight assistant. 
 USER: Hello. Janet Lee here.

ASSISTANT: Hello. How may I aid you?

USER: I would like to attend a business meeting in New York, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: sure, please share your travelling dates?

USER: Ok, I am planning to leave my location on 06/12 and please book my return ticket also on 06/14.

ASSISTANT: Sure, for booking the ticket we need source and destination airport codes?

USER: Ok, I will prefer CLT and EWR as my origin and destination airport codes respectively because those airport codes are near and convenient for me to travel.

ASSISTANT: I am sorry there is no flight on your route.

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

ASSISTANT: Thank you for choosing us.