You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Martinez.

ASSISTANT: Can you please tell me how may I help you?

USER: I would like to depart in the evening, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you with the ticket booking. Can you please tell me your airport codes?

USER: Sure, I want to travel from MSP to LAS.

ASSISTANT: Ok, which airlines do you prefer?

USER: I comfortable with any airline.

ASSISTANT: Ok, do you prefer a direct flight or a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Ok, may I know your departure and return journey dates please?

USER: Sure, My travelling dates are 07/27 and 07/29.

ASSISTANT: Ok, please give me a minute. In the meanwhile, tell me if you have any other preferences?

USER: Sure, I do not have another preferences.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no flight found in this route with the dates you have given.

USER: No worries, thank you for the information.

ASSISTANT: You are welcome. Thank you for choosing us.