You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Brenda Hall here, I want to reserve my ticket from PHL to SEA to visit Seattle, can you please help me to book a ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my preferable dates of travel is from 04/29 to 05/01.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with flight number 1027.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for approaching us.