You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Emma Clark.

ASSISTANT: How may I assist you today?

USER: As, I am a swimmer, I want to participate in the competition which is going to held in self drive swim with manatees in crystal river in Philadelphia, PA - PHL. Can you please reserve me a flight ticket from Oakland, CA - OAK?

ASSISTANT: Kindly mention your travel dates please?

USER: My itinerary dates are Jan 29 and Jan 31.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight found with an airline UA of flight 1003 and fare is 100 and departure time is afternoon. Would you like me to proceed in an economy class?

USER: Please proceed to book.

ASSISTANT: Your ticket has been confirmed with return time morning.

USER: Thank you.

ASSISTANT: Thank you for opting us.