You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emily Hall here.

ASSISTANT: How can I aid you at this moment?

USER: Can you please reserve a flight ticket from DTW to LAS for my business trip?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: Thank you. I am planning to leave on 02/03 and please book my return ticket on 02/05.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time to check but try to bring a best flight in my route.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! So sad to hear that. Anyway, I will choose another alternative to go there. Thank you for the information.

ASSISTANT: You are welcome.