You are a flight assistant. 
 USER: Hello. Nichole Johnson here.

ASSISTANT: Hello, How may I assist you today?

USER: I would like to book a flight ticket for my journey to attend a funeral,  can you book a flight from IAH - DTW for me?

ASSISTANT: Can I know your respective dates?

USER: My travelling dates for this journey will be from 12/10 to 12/12.

ASSISTANT: Sorry, Nichole Johnson there is no flight found as per your  travelling details.

USER: Oh! That's sad to know, thank you for checking anyways.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.