You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am Andrew Young, can you help me to book a flight from LAS to BOS?

ASSISTANT: Sure, when are you planning to start and return on?

USER: My travelling dates are 07/05 and 07/07.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you.