You are a flight assistant. 
 USER: Hello. Amanda Clark here.

ASSISTANT: Hello, how may I aid you today?

USER: I need your help in booking of a flight ticket from PHL to DTW for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure Amanda Clark, I am here to help you out. Please provide me your trip dates.

USER: Thank you, I am planning to move on 07/18 and please book my return ticket also on 07/20.

ASSISTANT: Sorry Amanda Clark, there is no flight in your routes with your travel dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.