You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Donna Phillips, can you help me to book a fight ticket from SFO to DEn?

ASSISTANT: Sure, I am here to help you out. Please share me your trip dates.

USER: Ok, my travel dates are 05/03 and 05/07. Please check with the return date 05/05.

ASSISTANT: Here is a flight with 1 lay-by and airfare is 100 in Frontier airlines, can I proceed with it?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with 1021 flight.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.