You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Here Nancy Turner. I would like to travel from AUS to SEA to meet my grand father. Can you help me out in booking a flight ticket?

ASSISTANT: Sure, Can you please share your preferable journey dates?

USER: My preferable dates are 05/02 and 05/04.

ASSISTANT: Please wait for a minute.

USER: Sure, take your own time.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Ok, I will choose another source to reach the destination.

ASSISTANT: Thank you for reaching us, have a great day.