You are a flight assistant. 
 USER: Hello, My name is Melissa Smith.

ASSISTANT: Hello, how may I assist you?

USER: I need to travel  PA-PHL to attend my grand father burial services. Can you help me in booking a flight ticket?

ASSISTANT: Could you please provide me your origin code?

USER: Sure, I intent to board from DC-IAD.

ASSISTANT: Please provide me your journey dates?

USER: Sure, My departure is on 11/19 and intent to return on 11/21.

ASSISTANT: One moment, I will check and revert to you.

USER: Ok.

ASSISTANT: We are happy to inform you that there is a flight found for your matching preferences. Price limit is 500 and having a direct flight. Shall I proceed for the booking?

USER: Do not proceed with booking, I need a single connection in between the journey.

ASSISTANT: Sorry for the inconvenience.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.