You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Dorothy Thomas, can you help me to search a flight from DFW to OAK?

ASSISTANT: Let me know your travelling dates?

USER: My trip dates are 04/01 and 04/03.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: No issues, thank you for your time.

ASSISTANT: Thanks.