You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Perez.

ASSISTANT: How can I serve you for the day?

USER: As I am a doctor, I want to meet a patient who is suffering with a serious health problem.So, can you please book a flight to PHL?

ASSISTANT: Sure, I will help you. Where would you like to start from?

USER: My journey starts from SFO.

ASSISTANT: Could you please let me know your origin and destination airport codes? Please share your travelling dates.

USER: I want to fly on 08/20 and return on 08/22.

ASSISTANT: Thanks for sharing your details, there was a flight available matching your requirements.

USER: OK.

ASSISTANT: The details are, Fight number is 1004, airline is AA and price is 200 with one connection. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket was reserved.

USER: Thank you for the great response.

ASSISTANT: Thanks for reaching us, have a safe journey.