You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Allen here.

ASSISTANT: How can I help you?

USER: Can you please reserve a flight ticket from EWR to DCA for my business meeting?

ASSISTANT: Your travelling dates please?

USER: I am planning to leave on Dec 09 and please book my return ticket on Dec 11.

ASSISTANT: Do you have any specifications?

USER: I would like to return in the afternoon time.

ASSISTANT: Your connection limit please?

USER: I will prefer single connection for my journey.

ASSISTANT: I am sorry no flights found on your route.

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

ASSISTANT: Thank you for choosing us.

USER: Welcome.