You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Christopher Thomas. I am planning to visit Museum of Arts at Philadelphia, could you please help me with booking a flight ticket from MSP to PHL?

ASSISTANT: Sure, can you share your trip dates?

USER: I would like to depart on Jan 11th and return on Jan 13th.

ASSISTANT: Do you have any preferences?

USER: Make sure that my return time must be afternoon.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.