You are a flight assistant. 
 USER: Hello. George Taylor here.

ASSISTANT: Hello, How can I help you?

USER: I want to travel from LAX to ORD to meet my cousin, can you please reserve a flight ticket between those locations?

ASSISTANT: Sure, May I know the journey dates?

USER: Ok, my departure is on Nov 19 and please book my return ticket also on Nov 21.

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Oh! Sad to heat that. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.

USER: Welcome.