You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Raymond Martinez here, I want to reserve my ticket from DCA to SEA, can you please help me out?

ASSISTANT: Sure, can you please share your travelling dates?

USER: Ok, my willing to travel dates are from Jun, 17 to Jun, 19.

ASSISTANT: Let me know your connection limit.

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a airline preference which is having normal cost.

ASSISTANT: We found an Hawaiian airlines with single connection and flight number is 1020. Shall I proceed?

USER: Is this a business class?

ASSISTANT: No, it is economy class.

USER: My depart time will be at evening.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Anyways, thank you for your service.