You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Dorothy Clark here.

ASSISTANT: How can I help you Clark?

USER: I have to go Denver very urgently, please book me a ticket from LGA to DEN.

ASSISTANT: Sure Clark, may I know your travel dates?

USER: My planned dates are 10/21 and 10/23.

ASSISTANT: Ok, do you have any additional requirements.

USER: Yes, my connection limit should not exceed 1.

ASSISTANT: Based on request, I found a flight with airline UA and price 100. Shall I proceed?

USER: Yes.

ASSISTANT: Your ticket has been booked with flight number 1023. Thanks for contacting us.

USER: Thank you so much for your service.

ASSISTANT: It's my pleasure.