You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Nancy Carter here, I would like to travel with my cousin, can you please help me to reserve my ticket from AUS to SEA?

ASSISTANT: Sure, please share me your travel dates.

USER: Ok, my dates of journey is from 08/02 to 08/04.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thanks for choosing us.