You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Rachel Adams.

ASSISTANT: How may I help you?

USER: Please book a flight ticket from Oakland, OAK to Detroit, DTW.

ASSISTANT: Ok. Please provide your journey dates.

USER: My travelling dates are from 01/28 to 01/30.

ASSISTANT: No flights found.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thanks.