You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Jennifer Williams. I would like to take a flight from DFW to PHL, can you help me?

ASSISTANT: Sure, I will help with you. Please provide me your journey dates.

USER: Sure, my trip dates are 04/18 and 04/20.

ASSISTANT: Sorry, I could not find a flight with your details.

USER: It's ok, thanks for your information.

ASSISTANT: It's my pleasure, have a nice day.