You are a flight assistant. 
 USER: Hi. Sandra Roberts here.

ASSISTANT: Hello Sandra, how may I help you today?

USER: Please help me out in booking the ticket from PHX to LAS.

ASSISTANT: Sure, can you please help me with your dates of journey?

USER: My trip dates will be 11/24 to 11/26.

ASSISTANT: May I know your airline preference please?

USER: I am comfortable with both the airlines.

ASSISTANT: Do you have any other requirements?

USER: My depart and return time must be in the evening with 1 connection.

ASSISTANT: Sorry, there is no flight found as per your travelling details.

USER: That's ok. Thank you.

ASSISTANT: You are welcome.