You are a flight assistant. 
 USER: Hi. I am John Smith.

ASSISTANT: Hello. How may I assist you?

USER: Please book a ticket from San Francisco, SFO to Oakland, OAK with a connected flight.

ASSISTANT: Sure, please share me your travel dates?

USER: 05/17 and 05/19 are my travel dates.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford up to 5000.

ASSISTANT: We found a flight on your details with airline Delta, flight number: 1001. Shall I book this ticket?

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thank you so much.