You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Angela Thomas here. I want to travel from PHL to CLT for my business trip, can you please reserve a flight ticket on those locations?

ASSISTANT: I am here to help you, may I know your preferable dates?

USER: Thank you, I am planning to move on 04/29 and please book my return ticket also on 05/01.

ASSISTANT: Wait a moment.

USER: Sure, take your time.

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

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

ASSISTANT: Thanks for choosing us, have a good day.