You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER:   I want to give a surprise to my father by booking a ticket from SFO to LAS, as he is going to travel for the first time. Can you help me in booking?

ASSISTANT: Good to hear, I will help you with that.

USER: Thank you.

ASSISTANT: Do you have any specifications?

USER: He need a connecting flight.

ASSISTANT: On what dates you are willing to book a ticket for your father?

USER: Well, the journey starts from 11/21 to 11/23.

ASSISTANT: Can you spare a minute? So that I will check with the availability of flights and revert you back.

USER: Sure, I will stand by.

ASSISTANT: On what name you are willing to book a ticket?

USER: Please book the ticket under the name Amanda Scott.

ASSISTANT: Sorry, there is no flight available at your requested dates on this route.

USER: Oh sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.