You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Help me with your name please.

USER: I am Nancy Clark.

ASSISTANT: Nancy Clark, what can I do for you now?

USER: I have to consult a doctor at Las Vegas, LAS regarding my health issue. So, can you book a flight ticket with fare 200?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: What are your planned dates?

USER: My journey dates are 06/10 and 06/12.

ASSISTANT: From which place you are heading from?

USER: San Francisco, SFO is my nearest airport, so I prefer to board from there.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: You have a UA airline of price 100 with 1 connection in 1022 flight. Is it comfortable to you?

USER: Yes, you can confirm it.

ASSISTANT: Booking has been done.

USER: Thank you for assisting me.

ASSISTANT: Thank you for picking us.