You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Thomas.

ASSISTANT: How may I serve you at this moment?

USER: I want to book a flight ticket from CA-SFO to CA-LAX. Can you help me?

ASSISTANT: Sure, please share your travelling dates?

USER: 10/19 and 10/21 are my travelling dates.

ASSISTANT: Ok, please wait for some time.

USER: Ok.

ASSISTANT: There is a Delta airline with fare of 100 and a halt in between the journey matches your schedule. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed with flight number 1020.

USER: Thank  you.

ASSISTANT: Thank you for reaching us.