You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight from SFO with 1 connection?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My preferable travelling dates are July 21 and 23.

ASSISTANT: Can you tell me your destination airport code?

USER: My preferred destination airport code is IAD.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Proceed with booking under my name Amanda Johnson.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.