You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I want to fly from EWR to ORD. Can you book a ticket from that route?

ASSISTANT: Ok, could you please share your departure and arrival day?

USER: My planned travel dates are 05/16 and 05/18.

ASSISTANT: Ok, could I have your name please?

USER:  Sure, Anna Davis here.

ASSISTANT: Ok, do you need direct or connecting flights?

USER: I want a connecting flight with economy class only.

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

USER: No issues, thank you for the information.

ASSISTANT: You are welcome.