The client is surprised by your response, expecting a more pliable "yes." You continue: "However, I'm happy to discuss possible alternatives that could work for both of us. Would you be open to exploring a slightly higher rate and a more realistic deadline?"
You respond to the client by saying: "I appreciate the opportunity to work on this project, but I'm afraid I won't be able to take it on at the rate you've offered. My research and experience suggest that the industry standard for this type of project is significantly higher. Additionally, I'm concerned that the deadline is too aggressive, and I wouldn't want to compromise the quality of the work."