You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Martin.

ASSISTANT: How can I assist you?

USER: Book a flight from OAK to DEN to visit my grand parent's so can you help me for booking flight ticket?

ASSISTANT: Yes, can you share me your travelling dates?

USER: My travelling dates are 04/09 and 04/11.

ASSISTANT: Give me a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.