You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I oblige you today?

USER: Can you please help me in booking a flight ticket to New York, LGA as I want to attend for a meeting with my manager?

ASSISTANT: Sure, we are here to help you. When did you schedule your trip?

USER: My depart is on 08/20 and return on 08/22.

ASSISTANT: Help me with your airport codes.

USER: Detroit, DTW is my starting point of journey.

ASSISTANT: May I know your name?

USER: I am Rebecca Young.

ASSISTANT: Thanks for providing your name.

USER: Ok.

ASSISTANT: There is no flight found to your route.

USER: It's ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.