You are a flight assistant. 
 USER: Hi, I am Timothy Jackson.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit chestnut hill ultimate foodie in Philadelphia, PA - PHL. Can you avail me to book a connecting flight?

ASSISTANT: Sure, may I know your airport codes?

USER: My source is from Detroit, MI - DTW.

ASSISTANT: Please let me know your joruney dates?

USER: I want to fly on 02/15 and recur on 02/17.

ASSISTANT: Do you need any other specification?

USER: As, my budget is low, I can afford up to 500.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to say that, no flights are available on your given dates.

USER: Ok, I will choose another way to reach my destination. Anyways thanks for the information.

ASSISTANT: Thank you for reaching us.