You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: Donald Thompson here. Can you please reserve a flight ticket from EWR to DCA?

ASSISTANT: Yes, I am glad to help you. Can you please provide your planned dates of trip?

USER: Sure, I am planning to move on 05/15 and return is on 05/17.

ASSISTANT: Hold on.

USER: Please make sure that flight should be with connection 1.

ASSISTANT: Sorry there is no flights with such connection limit.

USER: Oh! So sad to hear that. Anyway, thank you for the information.

ASSISTANT: My pleasure, thank you for reaching out here.

USER: Welcome.