You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Donna Hernandez.

ASSISTANT: How can I help you?

USER: I would like to book a ticket on 10/08 to 10/10, as there is a family function at Seattle.

ASSISTANT: Please provide your travelling codes?

USER: My source is SFO and destination is SEA.

ASSISTANT: Ok. Connecting flight can be booked with airline Delta having price 100. Shall I book a ticket?

USER: You can book it.

ASSISTANT: Your ticket is booked with flight number 1016.

USER: Thank you.

ASSISTANT: Thanks.