You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Christopher White. I want to book a ticket from MSP to PHL to meet my uncle, can you help me in booking?

ASSISTANT: May I know your travelling dates please?

USER: I am departing on 10/27 and return on 10/29.

ASSISTANT: I am sorry no flights available on your route. Thank you for choosing us.

USER: That's ok, thank you for your information.