You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to visit the Ferry market building place which is located in San Francisco, SFO. Can you avail me to book a flight ticket?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Aug 11 and 13.

ASSISTANT: Please share me your specifications.

USER: I need to travel in direct flight.

ASSISTANT: May I know your source airport code?

USER: I want to deviate from Chicago, ORD.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Larry Parker here.

ASSISTANT: We found a Delta airline and 1014 is flight number with a fare of 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.