You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Martin.

ASSISTANT: How may I assist you?

USER: I want to travel from MSP to BOS. Can you book a flight ticket for me?

ASSISTANT: Ok, may I know your travelling dates please?

USER: I want to fly on 03/06 and 03/08.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flights are available for you. Thank you for choosing our services.

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

ASSISTANT: Have a great day ahead.