You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Samantha Walker here. I want to book a flight ticket form SFO - HOU, can you help me?

ASSISTANT: Sure, may I know your journey dates please?

USER: I want to travel from 11/20 to 11/22.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Walker, I found a flight with Delta airlines available with price 100. Shall I book the ticket for you?

USER: Ok, please book my reservation with this flight.

ASSISTANT: Your ticket is confirmed and the flight number is 1018.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.