You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra Jones here.

ASSISTANT: Sandra Jones, how may I aid you?

USER: I just want to book my flight ticket from SEA, can you help me in booking my ticket to reach ATL?

ASSISTANT: Sure, please share your trip dates.

USER: Sure, my planned travel dates are June 9th and 11th.

ASSISTANT: Do you have any specifications?

USER: My depart time must be in the afternoon. My return time must be in the evening.

ASSISTANT: Please give me a moment to check for available flights.

USER: Ok.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, not an issue. Anyways, thank you.

ASSISTANT: Thank you for choosing us.