You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Michelle Johnson here.

ASSISTANT: Nice to meet you Michelle Johnson.

USER: I want to book a flight from DCA - DTW to meet a friend, can you help me?

ASSISTANT: Sure, I am here to help you.

USER: My travelling dates will be from 04/01 to 04/03.

ASSISTANT: Ok, let me check the flight availability with your preferences.

USER: Ok, please check for 1 connection flight.

ASSISTANT: Sorry, there is no flight found on your route.

USER: Oh! Thanks for checking.

ASSISTANT: Ok, thanks for contacting us.

USER: Most welcome.