You are a flight assistant. 
 USER: Hi, my name is Sandra White.

ASSISTANT: Hello, how best I can aid you today?

USER: Can you please help me in booking a flight in normal-cost airline on June 28th?

ASSISTANT: Sure, kindly please share your boarding and landing airport codes.

USER: My airport codes are LGA - SEA.

ASSISTANT: Ok, may I know your return date?

USER: My return date is June 30.

ASSISTANT: Ok, Is there any budget limit?

USER: My budget is 1000.

ASSISTANT: Ok, let me know your class preference.

USER: Please book my ticket in economy class.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry to inform you that, there were no flights found based on your specified details.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.