You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Boston in this week, so can you help me to book a flight ticket?

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: Sure, please book my ticket on 08/05 and 08/07.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: My airport codes are DEN and BOS.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates. Can I know your name for documentation?

USER: Ok, my name is Nicole Wright.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.